<p>A <strong>polygon</strong> is a closed plane figure (2-dimensional) with three or more straight sides.</p>
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<p><strong>Types of Polygons</strong></p>
<p><strong>Simple Polygon</strong> is a polygon that does not intersect itself and has no holes. There are two types of simple polygons, namely the <strong>convex polygon</strong> and <strong>concave polygon</strong>.</p>
<p>• <strong>Convex Polygon</strong> - all its interior angles are less than \(180^\circ\)</p>
<div class="content-block"><figure class="question-figure aligncenter" style="text-align: center;"><img src="https://vocwkpgapvksartxhhor.supabase.co/storage/v1/object/sign/question-images/pasted/1764310101759-drfuono78r4.png?token=eyJraWQiOiJiZTM3ZjNhZS05OWM4LTQ5ZGQtYjRiNS1iMTBhYmJhNjY5MWYiLCJhbGciOiJIUzI1NiJ9.eyJ1cmwiOiJxdWVzdGlvbi1pbWFnZXMvcGFzdGVkLzE3NjQzMTAxMDE3NTktZHJmdW9ubzc4cjQucG5nIiwic2NvcGUiOiJkb3dubG9hZCIsImlhdCI6MTc5MzAxMTA2NywiZXhwIjoxNzkzMDExMzY3fQ.GNuVTQkxyXuVyxeXp4VEt9Iki7eJb9o3tDh1xj9ZhHM" style="max-width: min(400px, 100%); height: auto; display: block;" class="aligncenter custom-width" /></figure></div>
<p>• <strong>Concave Polygon</strong> - has at least one interior angle greater than \(180^\circ\)</p>
<div class="content-block"><figure class="question-figure aligncenter" style="text-align: center;"><img src="https://vocwkpgapvksartxhhor.supabase.co/storage/v1/object/sign/question-images/pasted/1764310152003-w619bpsdz1s.png?token=eyJraWQiOiJiZTM3ZjNhZS05OWM4LTQ5ZGQtYjRiNS1iMTBhYmJhNjY5MWYiLCJhbGciOiJIUzI1NiJ9.eyJ1cmwiOiJxdWVzdGlvbi1pbWFnZXMvcGFzdGVkLzE3NjQzMTAxNTIwMDMtdzYxOWJwc2R6MXMucG5nIiwic2NvcGUiOiJkb3dubG9hZCIsImlhdCI6MTc5MzAxMTA2NywiZXhwIjoxNzkzMDExMzY3fQ.yFuJRP7pUDY5iBheuvN9P1hNFbdzNLc9BTyt5UxXPHE" style="max-width: min(400px, 100%); height: auto; display: block;" class="aligncenter custom-width" /></figure></div>
<p>• <strong>Regular Polygon is a polygon with all equal sides and all equal interior angles.</strong></p>
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<p>The interior-angle formula \((n-2)180^\circ\) used in this course applies to simple polygons. For the positive exterior-angle formula \(360^\circ\), use a convex polygon and one exterior angle at each vertex in a consistent direction. Regular polygons here are simple and convex.</p>

A **polygon** is a closed plane figure (2-dimensional) with three or more straight sides.

**Simple Polygon** is a polygon that does not intersect itself and has no holes. There are two types of simple polygons, namely the **convex polygon** and **concave polygon**.

• **Convex Polygon** - all its interior angles are less than \(180^\circ\)

• **Concave Polygon** - has at least one interior angle greater than \(180^\circ\)

• **Regular Polygon is a polygon with all equal sides and all equal interior angles.**

The interior-angle formula \((n-2)180^\circ\) used in this course applies to simple polygons. For the positive exterior-angle formula \(360^\circ\), use a convex polygon and one exterior angle at each vertex in a consistent direction. Regular polygons here are simple and convex.

Polygons

Polygons

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