This is a custom implementation of the Petr–Douglas–Neumann theorem. This was made as a response to the Petr’s miracle: Why was it lost for 100 years? (Mathologer Masterclass) video by Mathologer. Each polygon is the result of applying the angle after the next one. You'll see that the last one is always a point, and the previous one a regular polygon of n sides. Instructions: - Choose the number of points for the polygon - Drag the angles by drag/drop to reorder them - Drag the points by drag/drop to move them Made by TrianguloY