r987

Let A'B'C' be the circlecevian triangle of P. Let X, Y, Z be the midpoints between A and A', B and B', C and C'. Then A, Y, Z, P are concyclic and the same is true for B, Z, X, P and for C, X, Y, P. That is, ABC is the circlecevian triangle of P with respect to XYZ.

inici
  resultats