0:25

Circle Area Derivation (visual proof)

3:31

Squaring the Circle with the Archimedean Spiral (animated visual proof)

11:33

The Archimedean Spiral | Visually Explained (animation code also explained)

4:15

Trig Visualized: One Diagram to Rule them All (six trig functions in one diagram)

11:16

Impossible Geometry Problems: Trisecting Angle, Doubling Cube, Squaring Circle

15:17

Deriving Spherical Law of Cosines

8:01

Ten Epic Pythagorean Proofs Without Words

18:22

5 Things That Drain Your Soul In Old Age And How To Reclaim Them - Zen And Buddhist Teachings.