# Platonic bodies

*Platonic* solids (or: *ideal solids*, *regular polyhedra* — “*polyhedra*“) are *convex* solids with the greatest possible regularity, named after the Greek philosopher *Plato* (427–347 BC). (Here a body is called *convex* if with two each of its points and also all points on the connecting line belong to it).

This (“*greatest possible*“) regularity consists in the fact that for each of these solids all side faces are *congruent* (“congruent”) to each other and that they meet in the same way in each corner.

There are exactly five Platonic bodies: