The rotations of the dodecahedron
The red straw, laid between the mirrors that form an angle of 45°, shows the 3 rotation axes of order 4 of the octahedron (lines that go through opposite vertices).
See the other rotation axes or see the rotation axes together.
The image belongs to the sections...:
The symmetry group of the cube (*432) (Symmetry)
In the blue kaleidoscope (cube) (From the exhibitions of matematita)
Octahedron (3D geometry)