r141	tangential triangle, perspective, intangential triangle, incenter
r142	point X(12), Gergonne point, circumcenter, Feuerbach point, incenter, orthocenter, centroid, Schiffler point
r155	Mannheim circles, perspective
r150	circumcircle, incircle, tangent circles, perspective
r193	Schröder point, Weill point,Bevan-Schröder point, Bevan point, poristic triangles, point X(65), point X(55)
d	Bevan-Schröder point
r516	Jenkins circles, excircles, isotomic points
r547	intouch triangle, incircle, homothetic triangles
r1156	point X(55), inconic, perspector, Feuerbach point, isogonal points
r1327	circumcircle, incenter
r1440	circumcevian triangle, isogonal points, incenter, homothetic triangles
r1541	incircle
r1638	circumcevian triangle, perspective, incenter, circumcenter
r1752	altitude feet, radical center
r1833	isogonal points, incenter, circumcircle, Mannheim circles, Spieker point