14:34

Pentagons In Nature - Containing the Magical Golden Ratio (Phi) and more.

6:56

Pentagons and the Golden Ratio - Numberphile

22:55

The Golden Ratio: Is It Myth or Math?

7:13

How to draw a Golden Ratio Spiral

3:56

Golden Ratio is Irrational from a Regular Pentagon (visual proof)

7:40

Pentagram Construction.

4:56

Golden Proof - Numberphile

5:01

Qu'est-ce que la suite de Fibonacci et le nombre d'or ? Explication simple et exemples