The 3-4-7 miracle. Why is this one not super famous?
![](https://i.ytimg.com/vi/IguNXoCjBEk/mqdefault.jpg)
26:40
Heron’s formula: What is the hidden meaning of 1 + 2 + 3 = 1 x 2 x 3 ?
![](https://i.ytimg.com/vi/Y5wiWCR9Axc/mqdefault.jpg)
38:33
Pythagoras twisted squares: Why did they not teach you any of this in school?
![](https://i.ytimg.com/vi/ZIQQvxSXLhI/mqdefault.jpg)
19:06
La rueda de registro mágica ¿Cómo se perdió esto durante 400 años? (subtitulos en español)
![](https://i.ytimg.com/vi/PbJaOaXthhk/mqdefault.jpg)
18:18
¿Es posible? Preguntas simples, soluciones no tan simples
![](https://i.ytimg.com/vi/VvCytJvd4H0/mqdefault.jpg)
19:37
¿Por qué este rompecabezas es imposible?
![](https://i.ytimg.com/vi/yAEveAH2KwI/mqdefault.jpg)
25:10
What's the curse of the Schwarz lantern?
![](https://i.ytimg.com/vi/94mV7Fmbx88/mqdefault.jpg)
42:35
Fibonacci = Pythagoras: Help save a beautiful discovery from oblivion
![](https://i.ytimg.com/vi/SwGbHsBAcZ0/mqdefault.jpg)
22:56