From ProofWiki
Jump to navigation Jump to search


An octagon is a polygon with exactly $8$ sides.


Regular Octagon

A regular octagon is an octagon which is both equilateral and equiangular.

That is, a regular polygon with $8$ sides.

That is, an octagon in which all the sides are the same length, and all the vertices have the same angle:


Also known as

An octagon can also be referred to as an octangle, but this is rare.

Linguistic Note

The word octagon derives from the Greek octa, meaning eight, and gon, deriving from the Greek for corner.