1. Let A1B1C1 be a triangle, A2B2C2 its antipodal triangle (=circumcevian of O), A3B3C3 the circumcevian triangle of I with respect the triangle A2B2C2 and A'B'C' the circumcevian triangle of I.
The triangles A'B'C', A3B3C3 are perspective.
Perspector (on the OI line) ?
2. Orthic Triangle Version:
Perspector (on the Euler line of ABC) ?
APH, 16 January 2012
Francisco Javier García Capitán
16 January 2012