yes
the names of them are semiregular polyhedron
It is still a polyhedron. It may or may not still be a prism.
yes
Yes, a trapezoidal prism is a polyhedron. A polyhedron is a solid three dimensional object with flat face, straight edges and sharp corners.
A regular polyhedron (other than a hexahedron), any pyramid, as well as most irregular polyhedra.
Yes.
no
Yes, it is.
Yes.
yes it is
Yes.