there are 48 regular polyhedra

a comprehensive list of all 48 regular polyhedra in 3D Euclidean space primary source: 0:00 - introduction 1:06 - part one: what? 4:06 - part two: the platonic solids 6:21 - part three: the Kepler solids 9:00 - part four: the Kepler-Poinsot polyhedra 11:26