Wednesday, March 2, 2022

1805. An Equilateral Triangle Inscribed in Circumcircle

2 comments:

  1. Line BcCb is perpendicular bisector of BC.

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  2. let A1B1C1 be the CircumCevian triangle of X(15). A',B',C' are the antipodes of A1,B1,C1 on the circumcircle respectively

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1988. Circumcenters On Euler Line

  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...