This is a regular heptagon.
In geometry, a heptagon is a polygon with seven sides and seven angles. In a regular heptagon, in which all sides and all angles are equal, the sides meet at an angle of 5π/7 radians, 128.5714286 degrees. A regular heptagon is not constructible with compass and straightedge and it’s area is given by this: (A=area, a=side length.)
I posted this because I have a question. Does anybody else feel a little weird looking at a regular heptagon, or is it just me?
EDIT: I’ve read your replies! I think I see the problem.
Does that look better?