Let O_A. O_B, O_C are centers of congruent circles. The orthocenter of O_AO_BO_C is fixed and its X(3)-Circumcenter of ABC.
Let ABC be a triangle with P, Q are two points on Euler line of ABC. A',B',C' are inverse images of A,B,C through circle diame...
Let O_A. O_B, O_C are centers of congruent circles. The orthocenter of O_AO_BO_C is fixed and its X(3)-Circumcenter of ABC.
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