Solve for the magic angle
5:30
An 'impossible' homework question has baffled many parents
10:12
Can you solve this interesting geometry challenge?
10:34
find the missing angle!!
11:41
Famous mathematician puzzled by child's homework
13:53
The Rubik's Cube is a Calculator
9:11
The Turntable Paradox
12:21
Is this even solvable? What is the radius?
12:46