a geometry problem inspired by Japanese Sangaku
13:41
a famous geometry problem
9:11
Sangaku: Japanese "Sacred Geometry"
11:18
does your Calculus teacher give you limits this hard?!?
9:46
Can you solve these geometry problems?
14:19
Swedish Mathematics Olympiad | 2002 Question 4
20:39
a surprising exponential closure
31:10
the geometry of the third derivative
18:49