Pentagonal (or even pentaganol) is an adjective, not a noun and so a pentagonal cannot exist. The answers will be different according to whether you mean a pentagonal prism, a pentagonal pyramid, a pentagonal dipyramid, or whatever.
Pentagonal Prizm
A pentagonal pyramid.
A pentagonal what? A pentagonal pyramid or pentagonal prism have different numbers of vertices.
It could be a rectangular dipyramid, or a pentagonal pyramid or a triangular prism.
5 * * * * * No. A pyramid is a generic name for a polyhedron (solid shape) with one face (the base) which is a polygon with n sides (n ≥ 3), and n triangular faces. It will have n+1 vertices (corners). Thus, a triangular pyramid has 4 corners a quadrilateral pyramid has 5 corners a pentagonal pyramid has 6 corners, and so on.
10 edges 6 corners
A pentagonal prism has 10 vertices; 5 on each of two bases.
faces- 7 edges- 15 vertices- 10
Pentagonal Prizm
A pentagonal pyramid.
A pentagonal prism * * * * * No. A pentagonal prism has 7 faces and 10 vertices! A rectangular pyramid has 5 faces and 5 vertices.
A pentagonal what? A pentagonal pyramid or pentagonal prism have different numbers of vertices.
It could be a rectangular dipyramid, or a pentagonal pyramid or a triangular prism.
5 * * * * * No. A pyramid is a generic name for a polyhedron (solid shape) with one face (the base) which is a polygon with n sides (n ≥ 3), and n triangular faces. It will have n+1 vertices (corners). Thus, a triangular pyramid has 4 corners a quadrilateral pyramid has 5 corners a pentagonal pyramid has 6 corners, and so on.
Five (and a pentagonal base).Five (and a pentagonal base).Five (and a pentagonal base).Five (and a pentagonal base).
A pentagonal rotunda has 20 vertices
A pentagonal prism has ten vertices.