r88	Kiepert hyperbola
r146	ninecenter, Tarry point, third Brocard point, symmedian point
r190	perspective, Artzt parabolas
r319	Neuberg circles, perspective
r409	altitudes, perspective
r558	Johnson triangle, orthologic triangles, centroid, perspective
r1406	Neuberg triangle, antimedial triangle, perspective
r1779	centroid, symmedian point, circumcevian triangle, perspective, isotomic points