Understand Regular and Irregular Polygons

A polygon is a flat, 2D shape. 

It has straight sides and is fully closed, meaning that all the sides are straight and joined up.

Polygons can have any number of sides.

Regular polygons:

A regular polygon has all sides of the same length and all angles the same.

For example, an equilateral triangle is a regular polygon - all of its sides and angles are the same.

Irregular polygons:

An irregular polygon is a shape with sides and/or angles at differing lengths and sizes.

A scalene triangle has differing angles and sides.

Let's look at some more polygons in the questions.