One: the point. Vertices are points. And it has one edge, which is circular.
The description given fits that of cones
A pentacontagon has 50 vertices (not vertices's!).
16 vertices.16 vertices.16 vertices.16 vertices.
8 vertices
Eight vertices
it has 30 vertices
5 vertices
11 vertices
8 vertices
There are 10 vertices.
4 vertices
8 vertices.