r254	Simson line, ninecenter
r255	Simson line, Steiner deltoid
r256	Simson line, Stammler circles, radical axis
r257	antimedial triangle, Stammler circles, Morley triangle, homothetic triangles
r477	antipedal line, circumcircle
r762	Morley triangle, circumcircle, isotomic points, Steiner circumellipse, third Brocard point, Steiner point, homothetic triangles
r771	circumcircle, anticomplement, Steiner deltoid
r910	Kiepert parabola, inconic
r911	Stammler circles, circumcircle, homothetic triangles
r1377	Steiner deltoid, De Longchamps point, homothetic triangles
r1378	Steiner deltoid, ninecircle, centroid, homothetic triangles