Compound of six tetrahedra

As a cover for this...

Want to make a fairly complex geometric solid - torus in 10...

Semi-regular polyhedra are several groups of polyhedra: 1. Archimedean solids; 2. Catalan solids;...

The invention of the calendar is a remarkable event for humanity. The fact that a year consists of...

What do the dodecahedron and icosahedron have in...

The Lighthouse of Alexandria, one of the Seven Wonders, was built in the 3d century BC in an...

Archimedes, a scientist from Ancient Greece, discovered thirteen types of polyhedra, now called...