Let DEF be orthic triangle. K_A, K_B,K_C symmedian points of AFE, BFD, CDE resp. ABC is parabologiv to K_AK_BK_C, parabology center is X(6) symmedian point of ABC.
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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...
Let DEF be orthic triangle. K_A, K_B,K_C symmedian points of AFE, BFD, CDE resp. ABC is parabologiv to K_AK_BK_C, parabology center is X(6) symmedian point of ABC.
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