The power of the Sand Reckoner's diagram

Another diagram from the book Quadrivium (page 79). This one is called the Sand Reckoner's diagram, it can be used to divide a square's edge into 3, 4, 5, 7 and 11. Here's a link to the book: https://amzn.to/3Q4tgoZ Geometric art tutorials: https://geometerscircle.com/?video=4c... My newsletter: https://geometerscircle.com/wallpaper... Tools I use: https://zkorvin.com/tools Chapters: 00:00 Three 04:29 Five 05:53 Four 07:59 Seven 12:49 Eleven This video was made possible thanks to all the awesome members of the Geometers Circle. Thank you!