The {5/2}, {5,2} Duoprism

This is a projection of a rotating duoprism, a four-dimensional figure, with bases which are all star pentagons. This polytope’s faces include ten of these pentagrams, and twenty-five squares. Its three-dimensional cells are ten pentagrammic prisms. I made it using Stella 4d, a program which you can try, for free, at Here is this duoprism’s three-dimensional net.

The 5/2, 5/2 Duoprism

I made this duoprism, a four-dimensional polytope, using Stella 4d. You can try this program for yourself, free, at

The Dodecagonal Duoprism


There are objects in hyperspace known as duoprisms, which have prismatic cells. This one’s cells are 24 dodecagonal prisms. It was made using Stella 4d, available here.