Brilliant Geometry Puzzle
![](https://i.ytimg.com/vi/5tHgsPBtkHc/mqdefault.jpg)
1:05
Is 97 a Prime or Composite Number?
![](https://i.ytimg.com/vi/JKXl2Yc6pRM/mqdefault.jpg)
4:00
Ex: Find the Equation of a Plane Given a Point in the Plane and a Parallel Plane
![](https://i.ytimg.com/vi/9N8g8s5Mf2w/mqdefault.jpg)
7:35
Coolest Math Challenge
![](https://i.ytimg.com/vi/1tQ-XKDHLkw/mqdefault.jpg)
4:44
Cool Geometry Puzzle
![](https://i.ytimg.com/vi/6v10K6yExEg/mqdefault.jpg)
5:42
2 Squares 1 Semicircle
![](https://i.ytimg.com/vi/hk9c7sJ08Bg/mqdefault.jpg)
5:49
Can you solve the cheating royal riddle? - Dan Katz
![](https://i.ytimg.com/vi/_Qe_0aj4eEM/mqdefault.jpg)
21:45
Why You Can't Bring Checkerboards to Math Exams
![](https://i.ytimg.com/vi/d5hHzLMSF14/mqdefault.jpg)
26:47