Is it possible to have a polyhedron with any given number of faces?
Yes, it is possible if the number of faces is 4 or more.
Is it possible to have a polyhedron with any given number of faces? (Hint: Think of a pyramid).
A prism is a polyhedron whose base is a polygon (of any number of sides) and lateral faces are triangles with a common vertex.
A regular polyhedron should have congruent faces and its vertices should be formed by same number of faces.