A regular polygon is a shape that can be drawn on a flat surface. It has sides that are all the same length, and its angles are all the same. In other...

hexacontagon (or hexecontagon) 60 heptacontagon (or hebdomecontagon) 70 octacontagon (or ogdoëcontagon) 80 enneacontagon (or enenecontagon) 90 hectogon (or...