28:47

there are 48 regular polyhedra

22:16

Every Strictly-Convex Deltahedron

30:01

The ALMOST Perfect Numbers

26:08

The Quest to Build a 4D Rubik's Cube

15:18

The Five Compound Platonic Solids

24:26

The Beauty of Bézier Curves

17:33

How I made my own Fractal

8:11

Mathematical Coincidences