I decided searching for a webpage or book which gave the exact sets of vertices and their interrelation would be slower than drawing a diagram and figuring it out from first principles. There would undoubtedly have been any number of webpages which talked about the concept in general, or showed pretty ray-traced pictures without labelled vertices and without the back side of the solid visible, and sifting through all those for the right one sounded like a longer job than just drawing a diagram and reading vertex letters off it for ten minutes.

heh fair enough