nonagon
A 7 sided shape is a heptagon
A 2D shape with 9 sides is called a Nonagon.
Isasakaitateragon
pentagon
hexagon
Nonagon, or enneagon.
The 9-side shape
A nonagon
A nine sided shape is called a nonagon.
polygon or nonagon
A 7 sided shape is a heptagon
A 2D shape with 9 sides is called a Nonagon.
Nonagon is the name of a 9 sided shape. The US Steel Tower in Pittsburgh, Pennsylvania is a nonagon.
dodecagon
Decagon
pentadecahedron
An octagon.