A Beautiful Proof of Ptolemy's Theorem.
6:51
No Calculus Needed?! How to Maximize Range Using Simple Geometry.
13:06
Proof using Complex Numbers: Ptolemy's Theorem
32:54
Ptolemy’s Theorem and the Almagest: we just found the best visual proof in 2000 years
5:11
A Fun Proof of Van Aubel's Theorem.
7:04
Ptolemy's theorem from proj.math documentary
13:57
Pythagoras Would Be Proud: High School Students' New Proof of the Pythagorean Theorem [TRIGONOMETRY]
7:20
The Fermat Point of a Triangle | Geometric construction + Proof |
5:17