A polygon.
A Pentagon. A five sided figure is a pentagon
A Septagon from the greek Sept meaning 7
A figure with five sides is a pentagon.
I'm not certain, but i believe it would be a nonadecanonahedrinnonadaca- is 19decanona- is 90hedrin- is a 3d figure
heptagon
triangle .. ^^
Dekagon.
circle
It's called an internally contradictory definition. "Quadrilateral" means a figure with four sides. A figure with no sides is not a quadrilateral.
A hendecagon.
A polygon.
An octagon.
A decagon.
A dodecagon.
A quadrilateral.
A Pentagon. A five sided figure is a pentagon