Octagon

polygon with eight sides
An octagon

An octagon or 8-gon is a shape with 8 sides and 8 corners.

Regular octagonEdit

All sides of a regular octagon are the same length. Each corner is 135°. All corners added together equal 1080°.

AreaEdit

The amount of space a regular octagon takes up is

 

a is the length of one of its sides.

Another way to write it is

 

GalleryEdit

Related pagesEdit