Posts tagged 'field-algebraic'

GC-01.07 · Bùi Quang Tuân’s Five-Step Three-Circle Secant

On line L through O, draw circle cO meeting L at A and B, circle cBA meeting L at C, and circle cCO meeting cO above L at M and cBA below L at N. Then chord MN cuts cO at P with \(|MN|/|MP| = |MP|/|PN| = \phi\).