r868	intouch triangle, orthic triangle
r892	circumcircle, isogonal lines
r905	circumcenter, circumcircle, isogonal points
r908	antipedal line
c31
c39
r1348	pedal triangle, areal center, circumcircle, similar triangles
r1349	Tarry point, Lemoine line
r1350	point X(74), orthic axis, De Longchamps line
r1351	point X(100), circumcenter, incenter
r1385	Steiner deltoid, ninecircle, point X(125), point X(74)
r1398	point X(842), Steiner dual line
r1586	ninecircle, medial triangle, orthic triangle, point X(115)
r1587	circumcircle, inconic, circumcenter
r1588	circumcircle, Euler line, ninecircle, circumcevian triangle, point X(468)
r1589	ninecircle, medial triangle
r1873	circumcircle
r1874	circumcircle, medial triangle, perspective
r1891	Parry point, radical center
r1894	circumcircle, medial triangle, Steiner deltoid, radical center

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