r448	first Brocard triangle, isogonal points, Steiner circumellipse
r689	circumcenter, Apollonian circles, second Brocard triangle, Brocard points, pedal triangle, similar triangles
r895	Lemoine line
r1089	circumcircle, Kenmotu points, Schoute point, inverse points
r1090	isodynamic points
r1615	isogonal points, Euler line
r1616	isogonal points, Parry point, point X(74)