https://wikimd.com/index.php?action=history&feed=atom&title=ProtractorProtractor - Revision history2026-04-04T10:40:00ZRevision history for this page on the wikiMediaWiki 1.44.2https://wikimd.com/index.php?title=Protractor&diff=6014941&oldid=prevPrab at 02:47, 28 October 20242024-10-28T02:47:50Z<p></p>
<table style="background-color: #fff; color: #202122;" data-mw="interface">
<col class="diff-marker" />
<col class="diff-content" />
<col class="diff-marker" />
<col class="diff-content" />
<tr class="diff-title" lang="en">
<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td>
<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 02:47, 28 October 2024</td>
</tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l37">Line 37:</td>
<td colspan="2" class="diff-lineno">Line 37:</td></tr>
<tr><td class="diff-marker"></td><td style="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;"><div>* [[Navigation]]</div></td><td class="diff-marker"></td><td style="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;"><div>* [[Navigation]]</div></td></tr>
<tr><td class="diff-marker"></td><td style="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;"><br></td><td class="diff-marker"></td><td style="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;"><br></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="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;"><div><del style="font-weight: bold; text-decoration: none;">== Categories ==</del></div></td><td class="diff-marker" data-marker="+"></td><td style="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;"><div><ins style="font-weight: bold; text-decoration: none;"><br></ins></div></td></tr>
<tr><td class="diff-marker"></td><td style="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;"><div>[[Category:Measuring instruments]]</div></td><td class="diff-marker"></td><td style="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;"><div>[[Category:Measuring instruments]]</div></td></tr>
<tr><td class="diff-marker"></td><td style="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;"><div>[[Category:Geometry]]</div></td><td class="diff-marker"></td><td style="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;"><div>[[Category:Geometry]]</div></td></tr>
</table>Prabhttps://wikimd.com/index.php?title=Protractor&diff=5879409&oldid=prevPrab: CSV import2024-06-01T21:41:51Z<p>CSV import</p>
<p><b>New page</b></p><div>== Protractor ==<br />
<br />
A '''protractor''' is a measuring instrument, typically made of transparent plastic or glass, for measuring angles. Most protractors measure angles in degrees (°). Radian-scale protractors measure angles in radians. Some protractors are simple half-discs; these have existed since ancient times. More advanced protractors, such as the [[Bevel protractor]], have one or two swinging arms, which can be used to help measure the angle.<br />
<br />
== History ==<br />
The protractor has been used since ancient times. The earliest recorded use of a protractor dates back to the [[Ancient Egypt|ancient Egyptians]], who used a simple form of the instrument for architectural purposes. The modern protractor, as we know it, was developed in the 16th century.<br />
<br />
== Types of Protractors ==<br />
There are several types of protractors, each designed for specific applications:<br />
<br />
* '''Simple Protractor''': A basic semicircular tool used to measure angles up to 180°.<br />
* '''Full-Circle Protractor''': A circular protractor that can measure angles up to 360°.<br />
* '''Bevel Protractor''': A more complex instrument with a pivoted arm, used for precise angle measurements.<br />
* '''Digital Protractor''': An electronic version that provides a digital readout of the angle.<br />
<br />
== Uses ==<br />
Protractors are used in various fields, including:<br />
<br />
* [[Geometry]]: To measure and draw angles.<br />
* [[Engineering]]: For precise angle measurements in design and construction.<br />
* [[Navigation]]: Mariners use protractors to chart courses.<br />
* [[Art]]: Artists use protractors to create accurate angles in their work.<br />
<br />
== How to Use a Protractor ==<br />
To measure an angle using a protractor:<br />
<br />
1. Place the midpoint of the protractor on the vertex of the angle.<br />
2. Align one side of the angle with the zero line of the protractor.<br />
3. Read the number on the protractor where the other side of the angle intersects the number scale.<br />
<br />
== Related Pages ==<br />
* [[Angle]]<br />
* [[Geometry]]<br />
* [[Bevel protractor]]<br />
* [[Radian]]<br />
* [[Degree (angle)]]<br />
* [[Navigation]]<br />
<br />
== Categories ==<br />
[[Category:Measuring instruments]]<br />
[[Category:Geometry]]<br />
[[Category:Navigation]]<br />
<br />
{{Measuring-instrument-stub}}</div>Prab