Heptagon.
septagon
you call a seven sided shape a heptagon.
A seven sided 2D shape is a heptagon.
A seven-sided shape is known as a "Heptagon"
A seven sided shape is called a heptagon.
Heptagon - a polygon having seven sides
a seven sided shape!
A seven sided shape need not cost you anything!
A seven sided shape is called a heptagon.
A seven sided shape is a Heptagon
A nonagon is a nine sided shape.