Hyacinthos Message #21421 (Pedal circle)

Let (Q) be the PEDAL circle of P and (Qab), (Qac) the circles touching AB,AC and (Q) internally and let (Tab), (Tac) be the points of contact. Similarly we define the points Tbc, Tba and Tca, Tcb.



For all P (except for the points P on the bisectors and on the circumcircle) the lines TabTac, TbcTba, TcaTcb are concurrent.

Angel Montesdeoca, Creado con GeoGebra