Heptagon

A heptagon/septagon/7-gon is a shape with 7 sides and 7 corners.
Regular heptagon.
All sides of a regular heptagon are the same length. Each corner is 147.27°. All corners added together equal 6840°.
Area.
The amount of space a regular heptagon takes up is
"a" is the length of one of its sides.