lkarch/lkarch.org
1
1
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity
lkarch.org/tools/mathisfun/www.mathsisfun.com/geometry/parallelogram.html
Lucas Kent e39465ad2f Changes to be committed: 
new file:   Files/flashplayer_32_sa.exe
	new file:   favicon.ico
	new file:   globe.gif
	new file:   imgs/download.png
	new file:   imgs/zuck.jpg
	new file:   index.html
	new file:   other.ico
	new file:   script.js
	new file:   site.webmanifest
	new file:   sitemap.html
	new file:   styles/backround.css
	new file:   styles/border.css
	new file:   styles/fonts/Titillium_Web/OFL.txt
	new file:   styles/fonts/Titillium_Web/TitilliumWeb-Black.ttf
	new file:   styles/fonts/Titillium_Web/TitilliumWeb-Bold.ttf
	new file:   styles/fonts/Titillium_Web/TitilliumWeb-BoldItalic.ttf
	new file:   styles/fonts/Titillium_Web/TitilliumWeb-ExtraLight.ttf
	new file:   styles/fonts/Titillium_Web/TitilliumWeb-ExtraLightItalic.ttf
	new file:   styles/fonts/Titillium_Web/TitilliumWeb-Italic.ttf
	new file:   styles/fonts/Titillium_Web/TitilliumWeb-Light.ttf
	new file:   styles/fonts/Titillium_Web/TitilliumWeb-LightItalic.ttf
	new file:   styles/fonts/Titillium_Web/TitilliumWeb-Regular.ttf
	new file:   styles/fonts/Titillium_Web/TitilliumWeb-SemiBold.ttf
	new file:   styles/fonts/Titillium_Web/TitilliumWeb-SemiBoldItalic.ttf
	new file:   styles/fonts/webfontkit-20221027-163353/generator_config.txt
	new file:   styles/fonts/webfontkit-20221027-163353/specimen_files/grid_12-825-55-15.css
	new file:   styles/fonts/webfontkit-20221027-163353/specimen_files/specimen_stylesheet.css
	new file:   styles/fonts/webfontkit-20221027-163353/stylesheet.css
	new file:   styles/fonts/webfontkit-20221027-163353/titilliumweb-extralight-demo.html
	new file:   styles/fonts/webfontkit-20221027-163353/titilliumweb-extralight-webfont.woff
	new file:   styles/fonts/webfontkit-20221027-163353/titilliumweb-extralight-webfont.woff2
	new file:   styles/fonts/webfontkit-20221027-165950/generator_config.txt
	new file:   styles/fonts/webfontkit-20221027-165950/specimen_files/grid_12-825-55-15.css
	new file:   styles/fonts/webfontkit-20221027-165950/specimen_files/specimen_stylesheet.css
	new file:   styles/fonts/webfontkit-20221027-165950/stylesheet.css
	new file:   styles/fonts/webfontkit-20221027-165950/titilliumweb-bold-demo.html
	new file:   styles/fonts/webfontkit-20221027-165950/titilliumweb-bold-webfont.woff
	new file:   styles/fonts/webfontkit-20221027-165950/titilliumweb-bold-webfont.woff2
	new file:   styles/style.css
	new file:   tools/2048/.gitignore
	new file:   tools/2048/.jshintrc
	new file:   tools/2048/CONTRIBUTING.md
	new file:   tools/2048/LICENSE.txt
	new file:   tools/2048/README.md
	new file:   tools/2048/Rakefile
	new file:   tools/2048/favicon.ico
	new file:   tools/2048/index.html
	new file:   tools/2048/js/animframe_polyfill.js
	new file:   tools/2048/js/application.js
	new file:   tools/2048/js/bind_polyfill.js
	new file:   tools/2048/js/classlist_polyfill.js
	new file:   tools/2048/js/game_manager.js
	new file:   tools/2048/js/grid.js
	new file:   tools/2048/js/html_actuator.js
	new file:   tools/2048/js/keyboard_input_manager.js
	new file:   tools/2048/js/local_storage_manager.js
	new file:   tools/2048/js/tile.js
    new file:   tools/2048/meta/apple-touch-icon.png
	new file:   tools/webretro/cores/neocd_libretro.js
	new file:   tools/webretro/cores/neocd_libretro.wasm
	new file:   tools/webretro/cores/nestopia_libretro.js
	new file:   tools/webretro/cores/nestopia_libretro.wasm
	new file:   tools/webretro/cores/o2em_libretro.js
	new file:   tools/webretro/cores/o2em_libretro.wasm
	new file:   tools/webretro/cores/opera_libretro.js
	new file:   tools/webretro/cores/opera_libretro.wasm
2022-11-02 08:40:01 -04:00

185 lines
6.7 KiB
HTML
Raw Blame History

This file contains ambiguous Unicode characters

This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

<!DOCTYPE html>
<html lang="en"><!-- #BeginTemplate "/Templates/Main.dwt" --><!-- DW6 -->
<!-- Mirrored from www.mathsisfun.com/geometry/parallelogram.html by HTTrack Website Copier/3.x [XR&CO'2014], Sat, 29 Oct 2022 00:38:05 GMT -->
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<!-- #BeginEditable "doctitle" -->
<title>Parallelogram</title>
<meta name="description" content="Math explained in easy language, plus puzzles, games, quizzes, worksheets and a forum. For K-12 kids, teachers and parents.">
<!-- #EndEditable -->
<meta name="keywords" content="math, maths, mathematics, school, homework, education">
<meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=yes">
<meta name="HandheldFriendly" content="true">
<meta name="referrer" content="always">
<link rel="preload" href="../images/style/font-champ-bold.ttf" as="font" type="font/ttf" crossorigin="">
<link rel="preload" href="../style4.css" as="style">
<link rel="preload" href="../main4.js" as="script">
<link rel="stylesheet" href="../style4.css">
<script src="../main4.js" defer="defer"></script>
<!-- Global site tag (gtag.js) - Google Analytics -->
<script async="" src="https://www.googletagmanager.com/gtag/js?id=UA-29771508-1"></script>
<script>
window.dataLayer = window.dataLayer || [];
function gtag(){dataLayer.push(arguments);}
gtag('js', new Date());
gtag('config', 'UA-29771508-1');
</script>
</head>
<body id="bodybg">
<div id="stt"></div>
<div id="adTop"></div>
<header>
<div id="hdr"></div>
<div id="tran"></div>
<div id="adHide"></div>
<div id="cookOK"></div>
</header>
<div class="mid">
<nav>
<div id="menuWide" class="menu"></div>
<div id="logo"><a href="../index.html"><img src="../images/style/logo.svg" alt="Math is Fun"></a></div>
<div id="search" role="search"></div>
<div id="linkto"></div>
<div id="menuSlim" class="menu"></div>
<div id="menuTiny" class="menu"></div>
</nav>
<div id="extra"></div>
<article id="content" role="main">
<!-- #BeginEditable "Body" -->
<h1 class="center">Parallelogram</h1>
<p class="center"><i>(Jump to <a href="#Area">Area of a Parallelogram</a> or <a href="#Perimeter">Perimeter of a Parallelogram</a>)</i></p>
<p class="center">A <span class="center">Parallelogram</span> is a flat shape with opposite sides parallel and equal in length.</p>
<p class="center"><img src="images/parallelogram-angles.svg" alt="Parallelogram" height="" width=""></p>
<p class="center"></p>
<table align="center" width="83%" cellpadding="5" border="0">
<tbody>
<tr>
<td><img src="../images/style/right-arrow.gif" alt="right arrow" height="46" width="46"></td>
<td>Opposite sides are <a href="../perpendicular-parallel.html">parallel</a></td>
</tr>
<tr>
<td><img src="../images/style/right-arrow.gif" alt="right arrow" height="46" width="46"></td>
<td>
<p>Opposite sides are equal in length</p></td>
</tr>
<tr>
<td><img src="../images/style/right-arrow.gif" alt="right arrow" height="46" width="46"></td>
<td>Opposite angles
are equal (angles <b>A</b> are the same, and angles <b>B</b> are the same)</td>
</tr>
<tr>
<td><img src="../images/style/right-arrow.gif" alt="right arrow" height="46" width="46"></td>
<td>Angle <b>A</b> and angle <b>B</b> add up to 180°, so they are <a href="supplementary-angles.html">supplementary angles.</a></td>
</tr>
</tbody></table>
<p>Play with a <span class="center">Parallelogram</span>:</p>
<div class="script" style="height: 330px;">
images/geom-quad.js?mode=parallelogram
</div>
<p class="center large">NOTE: <a href="square.html">Squares</a>, <a href="rectangle.html">Rectangles</a> and <a href="rhombus.html">Rhombuses</a> are all
Parallelograms!</p>
<div class="example">
<p style="float:right; margin: 0 0 5px 10px;"><img src="images/rectangle-angles.svg" alt="Rectangle" height="113" width="158"></p>
<h3>Example:</h3>
<p>A <b>parallelogram</b> where all angles are right angles is a <b>rectangle</b>!</p>
</div>
<h2><a name="Area"></a>Area
of a<span class="center"> Parallelogram</span></h2>
<table style="border: 0; margin:auto;">
<tbody>
<tr>
<td><img src="images/parallelogram-base-ht.svg" alt="parallelogram base and height" height="" width=""></td>
<td>&nbsp;</td>
<td>
<p>The Area is the <b>base times the height</b>:</p>
<p class="center larger">Area = b × h</p>
<p class="center">(<b>h</b> is at right angles to <b>b</b>)</p></td>
</tr>
</tbody></table>
<div class="example">
<h3>Example: A <span class="center">parallelogram</span> has a base of 6 m and is 3 m high, what is its Area?</h3>
<p>Area = 6 m × 3 m = <b>18 m<sup>2</sup></b></p>
</div>
<h2><a name="Perimeter"></a>Perimeter of a <span class="center">Parallelogram</span></h2>
<p>The Perimeter is the distance around the edges.</p>
<table style="border: 0; margin:auto;">
<tbody>
<tr>
<td><img src="images/parallelogram-perim.svg" alt="parallelogram perimeter" height="" width=""></td>
<td>&nbsp;</td>
<td>
<p>The Perimeter is <b>2 times the (base + side length)</b>:</p>
<p class="center larger">Perimeter = 2(b+s)</p></td>
</tr>
</tbody></table>
<div class="example">
<h3>Example: A <span class="center">parallelogram</span> has a base of 12 cm and a side length of 6 cm, what is its Perimeter?</h3>
<p>Perimeter = 2 × (12 cm + 6 cm) = 2 × 18 cm = <b>36 cm</b></p>
</div>
<h2>Diagonals of a <span class="center">Parallelogram</span></h2>
<p style="float:left; margin: 0 10px 5px 0;"><img src="images/parallelogram-diameter-bisect.svg" alt="parallelogram diameter bisect" height="112" width="221"></p>
<p>The diagonals of a <span class="center">parallelogram</span> <a href="bisect.html">bisect</a> each other.</p>
<p>In other words the diagonals intersect each other at the half-way point.</p>
<div style="clear:both"></div>
<h2>Inside Any Quadrilateral</h2>
<p>And there is a <a href="parallelogram-in-quadrilateral.html">parallelogram in any quadrilateral</a>.</p>
<p>&nbsp;</p>
<div class="questions">9121, 9122, 9123, 9124, 9125, 9126, 9127, 9128, 9129, 9130</div>
<div class="related">
<a href="../quadrilaterals.html">Quadrilaterals</a>
<a href="index.html">Geometry Index</a>
</div>
<!-- #EndEditable -->
</article>
<div id="adend" class="centerfull noprint"></div>
<footer id="footer" class="centerfull noprint"></footer>
<div id="copyrt">Copyright © 2021 MathsIsFun.com</div>
</div>
</body><!-- #EndTemplate -->
<!-- Mirrored from www.mathsisfun.com/geometry/parallelogram.html by HTTrack Website Copier/3.x [XR&CO'2014], Sat, 29 Oct 2022 00:38:06 GMT -->
</html>
Reference in New Issue View Git Blame Copy Permalink