Hi Padex,

Here's the image for the tetrahedral cupola:

I think your coordinates are correct; you can see that the top tetrahedron is connected to the cuboctahedron by triangular prisms and other tetrahedra. The proportions also look right. I'm not so sure about leaving shadows enabled in the POVRay scene, though, some of the shadows are a bit distracting (makes it appear there's an edge where there isn't one).— Tetracube ( talk) 22:57, 25 November 2008 (UTC) reply