r154	circumconic, orthocenter
r197	orthocenter
r198	cevian triangle
r199	Fermat points, Kiepert hyperbola, Steiner dual line, orthic axis, concyclic points
r891	circumcircle, incircle, anticomplement
r1019	altitude feet
r1101	centroid, circumcenter, ninecenter, Gob point, point X(468), point X(403), point X(186), point X(858)