Student Tutorial: Geometry Basics: Polygon Basics

Instructions:

Learn about polygons. For this tutorial you'll be using the Desmos Geometry Tools, which are free: https://www.desmos.com/geometry. Watch the video and follow along using the Desmos tools.

Click the arrows on the bottom to get started

Math Clip Art: Student Tutorial Title Page

Polygon. A closed figure on a plane made up of line segments, called sides, that meet at points called vertices. A polygon has a minimum of three sides.

Polygon Basics Title Card

The number of sides determines the type of polygon.

A regular polygon has congruent sides and congruent angles.

A polygon can be regular or irregular.

A polygon can be regular or irregular.

A polygon can be regular or irregular.

A polygon can be regular or irregular.

The sum of the interior angles of a polygon depends on the number of sides.

The sum of the interior angles of a polygon depends on the number of sides.

The formula is based on the number of triangles that can be formed from one of the vertices of the polygon.