[url=https://twitter.com/panlepan/status/955175778269958145]Based on a tweet from Vincent Pataloni[/url][br][br]Number each circle along the bottom #1, 2, 3, .... (from left to right)[br]Number each circle on the left side #1, 2, 3, ... (from bottom to top)[br][br]Rotate points on circles #1 by the angle. [br]Rotate points on circles #2 by twice the angle. [br]Rotate points on circles #3 by three times the angle.... etc