Polygons
Polygons are 2d shapes. A polygon is a shape made up of straight lines, all the lines join up to form a closed shape. Each of the shapes below are regular polygons because all their angles and all their sides are equal.
Below is a printable sheet with a group of regular polygons on. It starts with the 3 sided triangle, increasing 1 side at a time up to the 12 sided dodecagon.
