Lunes of Alhazen: A Quick and Elegant Proof

The Lunes of Alhazen is a thousand year-old construct credited to Arab mathematician and physicist al-Hasan Ibn al-Haytham, also known as Alhazen.

More info about Ibn al-Haytham, who really should be better known than he is:
https://en.wikipedia.org/wiki/Ibn_al-...
   • Vision and Cameras - Ibn al-Haytham  

My Desmos graph: https://www.desmos.com/calculator/9jd...

Music: “Tigress”, iMovie Song (   • Tigris | iMovie Song-Music  )

This video by Michael Penn introduced me to this construct and presents a more rigorous proof:    • The Lunes of Alhazen  

Thales' Theorem: https://en.wikipedia.org/wiki/Thales%...

This is a remake of my first video:    • Lunes of Alhazen: A Quick and Elegant...