Tuesday, May 11, 2021

1697. A Circle Centered at NPC (X(5)).

-
Labels: , , ,

No comments:

Post a Comment

Subscribe to: Post Comments (Atom)

1987. Circumcenter On Euler Line

 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...