Polygons: the Petr-Douglas-Neumann theorem Blog post actions Print fmg Thursday June 13, 2024 This video is about constructions of regular polygons and the Petr-Douglas-Neumann theorem. Petr's miracle: Why was it lost for 100 years? (Mathologer Masterclass) Mathologer Jun 8, 2024 https://www.youtube.com/watch?v=WLAW5yz5O3E 36m30s