9
11
There are 10 sides : 9 sides and the nonagonal base.
45
A nonagon is a plane (2-dimensional) figure.Faces . . . 1Edges . . . 0Vertices. . 9Sides. . . . 9
Nine faces. That's because the "hedron" part is for a polyhedron (3D shape). Then non is nine (think nonagon).
It is called a Nonagon.
Nonagon
A nonagon (9 sides) for example.
Triangle Pentagon Septagon Nonagon Etc
There are 9 vertices in a nonagon.
A Nonagon has 9 sides