This document discusses polygons and their characteristics. There are two main types of polygons - regular polygons which have equal side lengths and angles, and irregular polygons which have unequal side lengths and angles. The name of a polygon is based on the number of sides it has, with a triangle having three sides.

1. Polygons

2. Polygons A polygon is any closed figure that is made up of straight line segments There are two main types of polygons regular and irregular polygons The name of a polygon is based on how many sides it has, for example triangle has three sides, tri=three

3. Regular Polygons To be a regular polygons the length of the sides must be the same and they must have the same angles These are regular polygons:

4. Irregular Polygons To be an irregular polygon the lengths of the sides of the polygon must be different and angle must be different These are irregular polygons:

5. Polygons vs. Non-Polygons This is a polygon: This is not a polygon: