prism,+right+prism,+and+oblique+prism


 * PRISM=** A polyhedron that consists of a polygonal region and its translated image on a parralell plane, with quadrilateral faces connecting corresponding edges


 * RIGHT PRISM=** A prism in which all of the lateral faces are rectangles.


 * OBLIQUE PRISM=** A prism which has at least one nonrectnagular lateral face.