Galileo’s polygon theorem
( go to the article → https://www.johndcook.com/blog/2020/12/28/galileos-polygon-theorem/ )
William J. Milne  attributes the following theorem to Galileo: The area of a circle is a mean proportional between the areas of any two similar polygons, one of which is circumscribed about the circle and the other is isoparametric with the circle. So imagine a polygon P and let S be an inscribed circle, that […] The post Galileo’s polygon theorem first appeared on John D. Cook.
Dec. 28, 2020, 7 p.m.