ANOPOLIS 816

Antreas P. Hatzipolakis

Let ABC be a triangle, A'B'C' the orthic triangle
and L a line passing through H.

Let A",B",C" be the reflections of A',B',C' in L, resp.

The circumcircles of the triangles:
1. A"BC, B"CA, C"AB
2. AB"C", BC"A", CA"B"

are concurrent.

APH

PS. In the case it is not new, please send me references.