r193	Schröder point,Bevan-Schröder point, Bevan point, poristic triangles, point X(65), point X(55), point X(56)
r429	Schröder point, incircle, inverse points
r561	intouch triangle, point X(55), incircle, cevian triangle
r871	incircle, antiorthic axis
r1168	centroid, circumcenter, symmedian point, Jerabek hyperbola