# Definition:Decagon

## Definition

A decagon is a polygon with exactly $10$ sides.

### Regular Decagon

A regular decagon is a decagon which is both equilateral and equiangular.

That is, a regular polygon with $10$ sides.

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

## Also see

• Results about decagons can be found here.

## Linguistic Note

The word decagon derives from the Greek deka, meaning ten, and gon, deriving from the Greek for corner.