Attached Link: http://www.uwrf.edu/~ll63/M247/geom/duals.htm

Well, I'd use the vertex modeller. You can make a pentagon by creating a oval with 5 sides. A Pentagon shaped prism would be just a matter of extruding the 5-side oval. Or, you could use 20 pentagons to make a regular solid. I've included a link that shows the 5 regular solids.