r1680

Let H, G be the orthocenter and the centroid of ABC. The medians cut the cevian circle of G, H at A’, B’, C’ and the circles centered at H going through A’, B’, C’ cut it again at A”, B”, C”. Let Ma, Mb, Mc be the midpoints of the sides. The lines MaA”, MbB”, McC” concur at the point X(858).


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