A Miraculous Proof (Ptolemy's Theorem) - Numberphile
16:37
Superhero Triangles - Numberphile
16:51
Euclid's Big Problem - Numberphile
41:14
Epic Induction - Numberphile
32:54
Ptolemy’s Theorem and the Almagest: we just found the best visual proof in 2000 years
24:52
What if all the world's biggest problems have the same solution?
26:57
The most beautiful equation in math, explained visually [Euler’s Formula]
21:29
What if you just keep zooming in?
26:36