Saturday, January 8, 2022

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  1. Dr. Abdilkadir AltıntaşJanuary 11, 2022 at 11:38 PM

    https://www.facebook.com/photo/?fbid=10223889797007575&set=gm.4736429763137359

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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...