What is the radius of 🔴?
15:26
a look at the future...
17:39
What is the relation between the radii of these circles?
29:42
Why 4d geometry makes me sad
19:37
Is this the Coolest Approximation for e?
13:08
Did I make this too hard?
14:29
Find the missing radius!
25:52
The Mystery of 355/113 and Pi
27:26