Visually stunning math concepts which are easy to explain Since I'm not that good at (as I like to call it) 'die-hard-mathematics', I've always liked concepts like the golden ratio or the dragon curve, which are easy to understand and explain but are mathematically beautiful at the same time.
Do you know of any other concepts like these?

I recently find some stunning visualizations. I preferred to share them all:

$5)$ Mean inequalities [from Proof without words]



$4)$ Streographic projection [by H.Segerman]



$3)$ Farey-Ford Tessellation in non-euclidean geometry [by F.Bonahon]


$2)$ Steiner porism [by Wikipedia]


$1)$ Polynomial roots [by J.Baez]


Aren't them Incredible??
