https://groups.io/g/euclid/message/1811
Let H=X(4)-Orthocenter of ABC. A 1 B 1 C 1 cevian triangle of H. B1 A , C1 A are reflections of B1, C1 on A. L A , line through B1 A , C1...
https://groups.io/g/euclid/message/1811
ReplyDelete