Archimedes - OTSC - I - Proposition 33

12:16
Archimedes - OTSC - I - Proposition 34

15:51
But why is a sphere's surface area four times its shadow?

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Thoughts on H.G. Wells' The First Men in the Moon

18:07
Circles In Geometry, Basic Introduction - Circumference, Area, Arc Length, Inscribed Angles & Chords

16:06
The Greatest Mathematician Who Ever Lived

7:38
Uniform Prisms and Antiprisms

27:26
This open problem taught me what topology is

16:24