How to rotate a polyhedron on itself ?
I would like to ask for help with the following problem:
1 - I built an octahedron, but could be another polyhedron, according to the drawing below.
2 - I would like to apply a twist in such a way that point B moves to the place of point D and point D moves to the place of point B.
3 - I got the turns, with the help of our dear friend, Professor Noel. The polyhedron rotates around the Axes, X, Y and Z, but not on itself.
If anyone can help me, thank you very much!