matematicas visuales | regular dodecahedron

The geometry of cube inside a dodecahedron – was inspired by this to look for it here.
The shape on the left is a dodecahedron inside a dodecahedron. 
Dodecahedron:  | matematicasVisuales


Mark de LA says
Then too there is a nice VR of polyhedra here: 
for example:
& other strange things to play with: (dual geodesic icosahedron)