A tessellation in equal pentagons. It is the dual tessellation of the uniform tessellation...
A crystal of flourite, that has the shape of a regular octahedron.The image appears in the...
We find the cubes in nature, for example, in a crystal of cubic pyrite. The image has been...
A chessboard is an example of a pattern of type *442 (if we imagine to extend it endlessly...
In corso Vittorio Emanuele, in Milano, a paving with equilateral triangles colored so that...
If you color the hexagons in a regular tessellation in a particular way, you can change th...
A three-dimensional projection of a hypercube. It is useful to compare this image with the...
The picture shows some of the 120 dodecahedra in a 120-cell. There is a ring of 10 dodecah...
The picture shows one of the two solid tori (made up of 60 dodecahedra each) in which a 12...
