A Septagon from the greek Sept meaning 7
A polygon.
A Pentagon. A five sided figure is a pentagon
I think it might be a kilogon since kilo=100. Centrahedron?
A seven sided figure with equal angles and equal sides is known as a heptagon. It looks similar to a pentagon but has more sides and therefore larger angles.
A figure with five sides is a pentagon.
A septagon has 7 sides.
heptagon
heptagon
triangle .. ^^
circle
Dekagon.
A right pentagonal prism.
It's called an internally contradictory definition. "Quadrilateral" means a figure with four sides. A figure with no sides is not a quadrilateral.
It is a heptagon.
A hendecagon.
A polygon.
A quadrilateral.