The rotations of the dodecahedron
The yellow straw, laid between the two mirrors that form an angle of 60°, shows the 4 rotation axes of order 3 of the octahedron (lines that go through the centres of opposite faces).
See the other rotation axes or 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)
Further information:
http://specchi.mat.unimi.it
