a geometry problem inspired by Japanese Sangaku
13:41
a famous geometry problem
31:10
the geometry of the third derivative
11:27
Japanese Math Olympiad Problem | Best Math Olympiad Problems | Geometry Problem
13:48
Simple yet 5000 years missed ?
7:49
A Quick and Easy Sangaku Puzzle
9:46
Can you solve these geometry problems?
11:18
does your Calculus teacher give you limits this hard?!?
15:34