A nine sided two dimensional shape would be called a nonagon. Nona is a common prefix meaning nine of something.
2D - Nonagon 3D - Nonahedron
A nonagon has 9 sides.
A regular nonagon.
A 2D shape with 9 sides is called a Nonagon.
A nonagon is a 2 dimensional shape that has nine sides. A polygon on the other side refers to a plane that is 2D and has three straight sides.
a 2d nonagon
A shape with nine sides is called a nonagon.
a shape with nine sides is called nonagon
It is called a nonagon.