A pentagonal is pentagon. As pentagon is 2D shape or object so it is having only one face.
A pyramid with an n-sided base will have n + 1 vertices, n + 1 faces, and 2n edges. 6 faces, 10 edges, 6 vertices
The Pentagonal Rotunda has 20 vertices, 17 faces and 35 edges. The Pentagonal Rotunda contains 10 trangles, 6 pentagons and 1 decagon.
A pentagonal prism
how many faces does a rectangular prism have how many faces does a rectangular prism have
10 faces 10 faces
no faces
A trapezoid is a quadrilateral and has four faces.
A hexahedron has 6 faces.
it has six faces
3 faces
6 faces
20 faces