The rotations of the cube
The green straw, laid between the mirrors that form an angle of 90°, shows the 6 rotation axes of order 2 in the cube (the lines which go through the midpoints of two opposite edges).
You can see the other rotation axes or all the axes together.
©
The image belongs to the sections...:
Cube (3D geometry)
The symmetry group of the cube (*432) (Symmetry)
In the blue kaleidoscope (cube) (From the exhibitions of matematita)
Further information:
http://specchi.mat.unimi.it
