A tridecagon is a 13-sided figure.
An eight sided figure is called an octagon.
An 11 sided figure is called a hendecagon, an undecagon, or a 11-gon.
A 5-sided figure is called a pentagon.
A six sided figure is called a hexagon, as "hex" means "six."
A tridecagon is a 13-sided figure.
An eight sided figure is called an octagon.
A 3-sided figure is called a triangle.
A four sided figure is called a quadrilateral.
A 12-sided figure is called a dodecagon.
A seven sided figure is called a heptagon.
A six-sided plane figure is called a hexagon.
A six-sided plane figure is called a hexagon.
A six sided figure is called a hexagon.
A six sided figure is called a hexagon.
Yes, an eight-sided figure is called an octagon.
An 8 sided figure is an octagon.