38:33

Pythagoras twisted squares: Why did they not teach you any of this in school?

13:57

Pythagoras Would Be Proud: High School Students' New Proof of the Pythagorean Theorem [TRIGONOMETRY]

19:10

Pi is IRRATIONAL: simplest proof on toughest test

16:58

Tous les triplets pythagoriciens possibles, visualisés

32:54

Ptolemy’s Theorem and the Almagest: we just found the best visual proof in 2000 years

48:21

The Helicone Numberscope: Mathematical Superpowers Hidden in a Simple Toy

17:08

Pourquoi pi est-il ici ? Et pourquoi est-il au carré ? Une réponse géométrique au problème de Bâle

32:23

Why are the formulas for the sphere so weird? (major upgrade of Archimedes' greatest discoveries)