org/wiki/File:NeumannTriangle.svg English Wikipedia] |Date = 2008-06-25 04:31 Qef 1619×763× (5811 bytes) {{Information |Description=Neumann triangle relating...
DescriptionPDNTheoremForTriangle.svg English: Diagram illustrating the fact that Napoleon's theorem is a special case of Petr-Douglas-Neumann theorem. Date 8...
