<?xml version="1.0"?>
<feed xmlns="http://www.w3.org/2005/Atom" xml:lang="en-GB">
	<id>http://wiki.dtonline.org/index.php?action=history&amp;feed=atom&amp;title=Squareness</id>
	<title>Squareness - Revision history</title>
	<link rel="self" type="application/atom+xml" href="http://wiki.dtonline.org/index.php?action=history&amp;feed=atom&amp;title=Squareness"/>
	<link rel="alternate" type="text/html" href="http://wiki.dtonline.org/index.php?title=Squareness&amp;action=history"/>
	<updated>2026-05-05T09:55:44Z</updated>
	<subtitle>Revision history for this page on the wiki</subtitle>
	<generator>MediaWiki 1.43.8</generator>
	<entry>
		<id>http://wiki.dtonline.org/index.php?title=Squareness&amp;diff=2993&amp;oldid=prev</id>
		<title>DT Online: Corrected category link</title>
		<link rel="alternate" type="text/html" href="http://wiki.dtonline.org/index.php?title=Squareness&amp;diff=2993&amp;oldid=prev"/>
		<updated>2015-07-22T13:02:46Z</updated>

		<summary type="html">&lt;p&gt;Corrected category link&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;en-GB&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 13:02, 22 July 2015&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l4&quot;&gt;Line 4:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 4:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[https://en.wikipedia.org/wiki/Carpentry &#039;&#039;&#039;Carpenters&#039;&#039;&#039;] and [https://en.wikipedia.org/wiki/Engineer &#039;&#039;&#039;Engineers&#039;&#039;&#039;] use &#039;&#039;&#039;[[Try &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Squares&lt;/del&gt;]]&#039;&#039;&#039; to draw or scribe lines at right angles to an edge or to test if a corner is &#039;&#039;&#039;Square&#039;&#039;&#039;. They may also use a &#039;&#039;&#039;[[Squares|Framing Square]]&#039;&#039;&#039; to check that corners of a larger construction are &#039;&#039;&#039;Square&#039;&#039;&#039; - but this can also be done by testing that its [https://en.wikipedia.org/wiki/Diagonal &#039;&#039;&#039;Diagonals&#039;&#039;&#039;] are of equal length &#039;&#039;(since this is a characteristic of all squares and rectangles).&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[https://en.wikipedia.org/wiki/Carpentry &#039;&#039;&#039;Carpenters&#039;&#039;&#039;] and [https://en.wikipedia.org/wiki/Engineer &#039;&#039;&#039;Engineers&#039;&#039;&#039;] use &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;a &lt;/ins&gt;&#039;&#039;&#039;[[Try &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Square&lt;/ins&gt;]]&#039;&#039;&#039; to draw or scribe lines at right angles to an edge or to test if a corner is &#039;&#039;&#039;Square&#039;&#039;&#039;. They may also use a &#039;&#039;&#039;[[Squares|Framing Square]]&#039;&#039;&#039; to check that corners of a larger construction are &#039;&#039;&#039;Square&#039;&#039;&#039; - but this can also be done by testing that its [https://en.wikipedia.org/wiki/Diagonal &#039;&#039;&#039;Diagonals&#039;&#039;&#039;] are of equal length &#039;&#039;(since this is a characteristic of all squares and rectangles).&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;----&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;----&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;lt;span style=&amp;quot;color: green&amp;quot;&amp;gt;&amp;#039;&amp;#039;&amp;#039;Note:&amp;#039;&amp;#039;&amp;#039;&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;lt;span style=&amp;quot;color: green&amp;quot;&amp;gt;&amp;#039;&amp;#039;&amp;#039;Note:&amp;#039;&amp;#039;&amp;#039;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>DT Online</name></author>
	</entry>
	<entry>
		<id>http://wiki.dtonline.org/index.php?title=Squareness&amp;diff=2888&amp;oldid=prev</id>
		<title>DT Online at 17:01, 17 July 2015</title>
		<link rel="alternate" type="text/html" href="http://wiki.dtonline.org/index.php?title=Squareness&amp;diff=2888&amp;oldid=prev"/>
		<updated>2015-07-17T17:01:12Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;en-GB&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 17:01, 17 July 2015&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l2&quot;&gt;Line 2:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 2:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[File:TestingDiagonals.png|200px|right]]&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[File:TestingDiagonals.png|200px|right]]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;#039;&amp;#039;&amp;#039;Squareness&amp;#039;&amp;#039;&amp;#039; refers to things being a right angles or 90 degrees to each other &amp;#039;&amp;#039;(i.e. as the corners of a [https://en.wikipedia.org/wiki/Square &amp;#039;&amp;#039;&amp;#039;Square&amp;#039;&amp;#039;&amp;#039;])&amp;#039;&amp;#039;. Checking that something is &amp;#039;&amp;#039;&amp;#039;Square&amp;#039;&amp;#039;&amp;#039; is a common designing and making requirement and operations often have to be performed at right angles to an edge or surface &amp;#039;&amp;#039;(e.g. marking a line, cutting material to length, drilling a hole)&amp;#039;&amp;#039;.&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;#039;&amp;#039;&amp;#039;Squareness&amp;#039;&amp;#039;&amp;#039; refers to things being a right angles or 90 degrees to each other &amp;#039;&amp;#039;(i.e. as the corners of a [https://en.wikipedia.org/wiki/Square &amp;#039;&amp;#039;&amp;#039;Square&amp;#039;&amp;#039;&amp;#039;])&amp;#039;&amp;#039;. Checking that something is &amp;#039;&amp;#039;&amp;#039;Square&amp;#039;&amp;#039;&amp;#039; is a common designing and making requirement and operations often have to be performed at right angles to an edge or surface &amp;#039;&amp;#039;(e.g. marking a line, cutting material to length, drilling a hole)&amp;#039;&amp;#039;.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[https://en.wikipedia.org/wiki/Carpentry &amp;#039;&amp;#039;&amp;#039;Carpenters&amp;#039;&amp;#039;&amp;#039;] and [https://en.wikipedia.org/wiki/Engineer &amp;#039;&amp;#039;&amp;#039;Engineers&amp;#039;&amp;#039;&amp;#039;] use &amp;#039;&amp;#039;&amp;#039;[[Try Squares]]&amp;#039;&amp;#039;&amp;#039; to draw or scribe lines at right angles to an edge or to test if a corner is &amp;#039;&amp;#039;&amp;#039;Square&amp;#039;&amp;#039;&amp;#039;. They may also use a &amp;#039;&amp;#039;&amp;#039;[[Squares|Framing Square]]&amp;#039;&amp;#039;&amp;#039; to check that corners of a larger construction are &amp;#039;&amp;#039;&amp;#039;Square&amp;#039;&amp;#039;&amp;#039; - but this can also be done by testing that its [https://en.wikipedia.org/wiki/Diagonal &amp;#039;&amp;#039;&amp;#039;Diagonals&amp;#039;&amp;#039;&amp;#039;] are of equal length &amp;#039;&amp;#039;(since this is a characteristic of all squares and rectangles).&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[https://en.wikipedia.org/wiki/Carpentry &amp;#039;&amp;#039;&amp;#039;Carpenters&amp;#039;&amp;#039;&amp;#039;] and [https://en.wikipedia.org/wiki/Engineer &amp;#039;&amp;#039;&amp;#039;Engineers&amp;#039;&amp;#039;&amp;#039;] use &amp;#039;&amp;#039;&amp;#039;[[Try Squares]]&amp;#039;&amp;#039;&amp;#039; to draw or scribe lines at right angles to an edge or to test if a corner is &amp;#039;&amp;#039;&amp;#039;Square&amp;#039;&amp;#039;&amp;#039;. They may also use a &amp;#039;&amp;#039;&amp;#039;[[Squares|Framing Square]]&amp;#039;&amp;#039;&amp;#039; to check that corners of a larger construction are &amp;#039;&amp;#039;&amp;#039;Square&amp;#039;&amp;#039;&amp;#039; - but this can also be done by testing that its [https://en.wikipedia.org/wiki/Diagonal &amp;#039;&amp;#039;&amp;#039;Diagonals&amp;#039;&amp;#039;&amp;#039;] are of equal length &amp;#039;&amp;#039;(since this is a characteristic of all squares and rectangles).&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>DT Online</name></author>
	</entry>
	<entry>
		<id>http://wiki.dtonline.org/index.php?title=Squareness&amp;diff=2887&amp;oldid=prev</id>
		<title>DT Online: Added images</title>
		<link rel="alternate" type="text/html" href="http://wiki.dtonline.org/index.php?title=Squareness&amp;diff=2887&amp;oldid=prev"/>
		<updated>2015-07-17T17:00:32Z</updated>

		<summary type="html">&lt;p&gt;Added images&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;en-GB&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 17:00, 17 July 2015&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l1&quot;&gt;Line 1:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 1:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&#039;&#039;&#039;Squareness&#039;&#039; refers to things being a right angles or 90 degrees to each other &#039;&#039;(i.e. as the corners of a [https://en.wikipedia.org/wiki/Square &#039;&#039;&#039;Square&#039;&#039;&#039;])&#039;&#039;. Checking that something is &#039;&#039;&#039;Square&#039;&#039;&#039; is a common designing and making requirement and operations often have to be performed at right angles to an edge or surface &#039;&#039;(e.g. marking a line, cutting material to length, drilling a hole)&#039;&#039;.&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;[[File:TestingSquareness.png|200px|right]]&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;[[File:TestingDiagonals.png|200px|right]]&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&#039;&#039;&#039;Squareness&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&#039;&lt;/ins&gt;&#039;&#039; refers to things being a right angles or 90 degrees to each other &#039;&#039;(i.e. as the corners of a [https://en.wikipedia.org/wiki/Square &#039;&#039;&#039;Square&#039;&#039;&#039;])&#039;&#039;. Checking that something is &#039;&#039;&#039;Square&#039;&#039;&#039; is a common designing and making requirement and operations often have to be performed at right angles to an edge or surface &#039;&#039;(e.g. marking a line, cutting material to length, drilling a hole)&#039;&#039;.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[https://en.wikipedia.org/wiki/Carpentry &amp;#039;&amp;#039;&amp;#039;Carpenters&amp;#039;&amp;#039;&amp;#039;] and [https://en.wikipedia.org/wiki/Engineer &amp;#039;&amp;#039;&amp;#039;Engineers&amp;#039;&amp;#039;&amp;#039;] use &amp;#039;&amp;#039;&amp;#039;[[Try Squares]]&amp;#039;&amp;#039;&amp;#039; to draw or scribe lines at right angles to an edge or to test if a corner is &amp;#039;&amp;#039;&amp;#039;Square&amp;#039;&amp;#039;&amp;#039;. They may also use a &amp;#039;&amp;#039;&amp;#039;[[Squares|Framing Square]]&amp;#039;&amp;#039;&amp;#039; to check that corners of a larger construction are &amp;#039;&amp;#039;&amp;#039;Square&amp;#039;&amp;#039;&amp;#039; - but this can also be done by testing that its [https://en.wikipedia.org/wiki/Diagonal &amp;#039;&amp;#039;&amp;#039;Diagonals&amp;#039;&amp;#039;&amp;#039;] are of equal length &amp;#039;&amp;#039;(since this is a characteristic of all squares and rectangles).&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[https://en.wikipedia.org/wiki/Carpentry &amp;#039;&amp;#039;&amp;#039;Carpenters&amp;#039;&amp;#039;&amp;#039;] and [https://en.wikipedia.org/wiki/Engineer &amp;#039;&amp;#039;&amp;#039;Engineers&amp;#039;&amp;#039;&amp;#039;] use &amp;#039;&amp;#039;&amp;#039;[[Try Squares]]&amp;#039;&amp;#039;&amp;#039; to draw or scribe lines at right angles to an edge or to test if a corner is &amp;#039;&amp;#039;&amp;#039;Square&amp;#039;&amp;#039;&amp;#039;. They may also use a &amp;#039;&amp;#039;&amp;#039;[[Squares|Framing Square]]&amp;#039;&amp;#039;&amp;#039; to check that corners of a larger construction are &amp;#039;&amp;#039;&amp;#039;Square&amp;#039;&amp;#039;&amp;#039; - but this can also be done by testing that its [https://en.wikipedia.org/wiki/Diagonal &amp;#039;&amp;#039;&amp;#039;Diagonals&amp;#039;&amp;#039;&amp;#039;] are of equal length &amp;#039;&amp;#039;(since this is a characteristic of all squares and rectangles).&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;----&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;----&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;lt;span style=&amp;quot;color: green&amp;quot;&amp;gt;&amp;#039;&amp;#039;&amp;#039;Note:&amp;#039;&amp;#039;&amp;#039;&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;lt;span style=&amp;quot;color: green&amp;quot;&amp;gt;&amp;#039;&amp;#039;&amp;#039;Note:&amp;#039;&amp;#039;&amp;#039;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The &#039;&#039;&#039;Diagonals&#039;&#039;&#039; of an [https://en.wikipedia.org/wiki/Isosceles_trapezoid &#039;&#039;&#039;Isosceles Trapezium&#039;&#039;&#039;] are also equal so checking their length would also test if such a regular shape was &#039;&#039;&#039;&#039;&#039;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;squared up&lt;/del&gt;&#039;&#039;&#039;&#039;&#039;  &lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The &#039;&#039;&#039;Diagonals&#039;&#039;&#039; of an [https://en.wikipedia.org/wiki/Isosceles_trapezoid &#039;&#039;&#039;Isosceles Trapezium&#039;&#039;&#039;] are also equal so checking their length would also test if such a regular shape was &#039;&#039;&#039;&#039;&#039;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;‘squared up’&lt;/ins&gt;&#039;&#039;&#039;&#039;&#039;  &lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;lt;/span&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;lt;/span&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;----&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;----&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;In [https://en.wikipedia.org/wiki/Technical_drawing &#039;&#039;&#039;Technical Drawing&#039;&#039;&#039;] a [https://en.wikipedia.org/wiki/Drafter &#039;&#039;&#039;Draughtsman&#039;&#039;&#039;] would use a &#039;&#039;&#039;[Squares|T-square]&#039;&#039;&#039; pressed against the edge of a drawing board to draw parallel lines across the paper and place &#039;&#039;&#039;[Squares|Set Squares]&#039;&#039;&#039; to draw lines at 90deg, 45deg, 60deg, and 30deg to it.&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;[[File:TsqSetsqs.png|200px|right]]&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;In [https://en.wikipedia.org/wiki/Technical_drawing &#039;&#039;&#039;Technical Drawing&#039;&#039;&#039;] a [https://en.wikipedia.org/wiki/Drafter &#039;&#039;&#039;Draughtsman&#039;&#039;&#039;] would use a &#039;&#039;&#039;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;[&lt;/ins&gt;[Squares|T-square&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;]&lt;/ins&gt;]&#039;&#039;&#039; pressed against the edge of a drawing board to draw parallel lines across the paper and place &#039;&#039;&#039;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;[&lt;/ins&gt;[Squares|Set Squares&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;]&lt;/ins&gt;]&#039;&#039;&#039; to draw lines at 90deg, 45deg, 60deg, and 30deg to it.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[Category:Terminology]]&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[Category:Terminology]]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>DT Online</name></author>
	</entry>
	<entry>
		<id>http://wiki.dtonline.org/index.php?title=Squareness&amp;diff=2883&amp;oldid=prev</id>
		<title>DT Online: Created Article</title>
		<link rel="alternate" type="text/html" href="http://wiki.dtonline.org/index.php?title=Squareness&amp;diff=2883&amp;oldid=prev"/>
		<updated>2015-07-17T09:21:10Z</updated>

		<summary type="html">&lt;p&gt;Created Article&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;&amp;#039;&amp;#039;&amp;#039;Squareness&amp;#039;&amp;#039; refers to things being a right angles or 90 degrees to each other &amp;#039;&amp;#039;(i.e. as the corners of a [https://en.wikipedia.org/wiki/Square &amp;#039;&amp;#039;&amp;#039;Square&amp;#039;&amp;#039;&amp;#039;])&amp;#039;&amp;#039;. Checking that something is &amp;#039;&amp;#039;&amp;#039;Square&amp;#039;&amp;#039;&amp;#039; is a common designing and making requirement and operations often have to be performed at right angles to an edge or surface &amp;#039;&amp;#039;(e.g. marking a line, cutting material to length, drilling a hole)&amp;#039;&amp;#039;.&lt;br /&gt;
&lt;br /&gt;
[https://en.wikipedia.org/wiki/Carpentry &amp;#039;&amp;#039;&amp;#039;Carpenters&amp;#039;&amp;#039;&amp;#039;] and [https://en.wikipedia.org/wiki/Engineer &amp;#039;&amp;#039;&amp;#039;Engineers&amp;#039;&amp;#039;&amp;#039;] use &amp;#039;&amp;#039;&amp;#039;[[Try Squares]]&amp;#039;&amp;#039;&amp;#039; to draw or scribe lines at right angles to an edge or to test if a corner is &amp;#039;&amp;#039;&amp;#039;Square&amp;#039;&amp;#039;&amp;#039;. They may also use a &amp;#039;&amp;#039;&amp;#039;[[Squares|Framing Square]]&amp;#039;&amp;#039;&amp;#039; to check that corners of a larger construction are &amp;#039;&amp;#039;&amp;#039;Square&amp;#039;&amp;#039;&amp;#039; - but this can also be done by testing that its [https://en.wikipedia.org/wiki/Diagonal &amp;#039;&amp;#039;&amp;#039;Diagonals&amp;#039;&amp;#039;&amp;#039;] are of equal length &amp;#039;&amp;#039;(since this is a characteristic of all squares and rectangles).&lt;br /&gt;
----&lt;br /&gt;
&amp;lt;span style=&amp;quot;color: green&amp;quot;&amp;gt;&amp;#039;&amp;#039;&amp;#039;Note:&amp;#039;&amp;#039;&amp;#039;&lt;br /&gt;
The &amp;#039;&amp;#039;&amp;#039;Diagonals&amp;#039;&amp;#039;&amp;#039; of an [https://en.wikipedia.org/wiki/Isosceles_trapezoid &amp;#039;&amp;#039;&amp;#039;Isosceles Trapezium&amp;#039;&amp;#039;&amp;#039;] are also equal so checking their length would also test if such a regular shape was &amp;#039;&amp;#039;&amp;#039;&amp;#039;&amp;#039;squared up&amp;#039;&amp;#039;&amp;#039;&amp;#039;&amp;#039; &lt;br /&gt;
&amp;lt;/span&amp;gt;&lt;br /&gt;
----&lt;br /&gt;
In [https://en.wikipedia.org/wiki/Technical_drawing &amp;#039;&amp;#039;&amp;#039;Technical Drawing&amp;#039;&amp;#039;&amp;#039;] a [https://en.wikipedia.org/wiki/Drafter &amp;#039;&amp;#039;&amp;#039;Draughtsman&amp;#039;&amp;#039;&amp;#039;] would use a &amp;#039;&amp;#039;&amp;#039;[Squares|T-square]&amp;#039;&amp;#039;&amp;#039; pressed against the edge of a drawing board to draw parallel lines across the paper and place &amp;#039;&amp;#039;&amp;#039;[Squares|Set Squares]&amp;#039;&amp;#039;&amp;#039; to draw lines at 90deg, 45deg, 60deg, and 30deg to it.&lt;br /&gt;
&lt;br /&gt;
[[Category:Terminology]]&lt;/div&gt;</summary>
		<author><name>DT Online</name></author>
	</entry>
</feed>