The regular convex polyhedra are the five Platonic solids, which have been known since classical Greece. The ancient Greek mathematician Euclid proved in his Elements of Geometry that there are only ...

When these 13 circles are connected by straight lines, an extraordinary geometric matrix emerges. Hidden within this matrix are all five Platonic solids - the cube, tetrahedron, octahedron ...

As a child, I was beguiled by the concept of ideal Platonic forms: Geometric solids so perfect they could only be conceived of in the mind. Try to materialize them in our imperfect world, though, and ...