The figure below shows a regular dodecagon ABCDEFGHJKLM. Prove that diagonals AE, BF, CH, and DL are concurrent at P.

Geometry Problems Ten problems: 1351-1360 Visual Index Open Problems All Problems Polygons Kurschak's Dodecagon Problem 1323: Square, Regular Dodecagon Problem 1357: Regular Dodecagon, Concurrency, Collinearity View or Post a solution