decagon
The name of a four sided figure (or shape) is called a Square. :)
Heptagon - a seven sided two demensional figure
Hexagon
thirteenagon
decagon
A decagon
Decagon
Decagon.
The name of a 10 side polygon is called a decagon
A 10 sided polygon is a decagon.
Icosagon is a 20 sided figure.
The name of a four sided figure (or shape) is called a Square. :)
The name that is given to an 8 sided figure is a octogan.
The name of a 18 sided figure is an octadecagon or octakaidecagon. As you can see the prefix octa- means 8, and deca- means 10. It has 18 sides and 18 vertices,
A 5 sided figure is called a: pentagon
A 15-sided figure is called a pentadecagon.