### Definition of a Regular Polygon:

A regular polygon is simply a polygon whose sides all have the same length and angles all have the same measure. The most well known regular polygons are the equilateral triangle and square, both pictured below.

#### Examples of Regular Polygons

#### Non-Examples of Regular Polygons

Non-regular Triangle

Non-regular Quadrilateral

Non-regular Pentagon

Non-regular Hexagon

As you can see from the pictures above, the side lengths and interior angles are different sizes (ie have different measurements)