r1009	Euler line
r1033	cevian triangle, medial triangle, point X(115)
r1038	pedal triangle, incenter, excenters, circumcenter, Jerabek hyperbola
r1039	pedal triangle, excenters, isogonal points, point X(80)
r1040	orthocentroidal circle, incenter, symmedian point, Spieker point, Gergonne point, Nagel point, Brocard points, Fermat points, Napoleon points
r1149	point X(523), cevian quotient, incenter
r1155	Tucker circles, incircle, inconic, perspector, isogonal points
r1156	point X(56), point X(55), inconic, perspector, isogonal points
r1281	Mandart ellipse
r1284	Steiner line, point X(12)
r1429	circumcevian triangle, intouch triangle, incenter, point X(100)
r1434	point X(100), centroid, Nagel point, circumcenter
r1473	incenter, circumcenter
r1479	incenter, circumcenter, homothetic triangles
r1482	incenter, circumcircle, incircle
r1502	circumcircle, excircles
r1591	Euler line
r1592	incenter, ninecenter, point X(65)
r1593	incenter, ninecenter
r1606	Gergonne point, concyclic points
r1607	Yff point, concyclic points
r1610	centroid, incircle, concyclic points
r1645	incenter
r1646	Nagel point, Mittenpunkt, cevian circle
r1651	medial triangle, extouch triangle, side triangle, perspective

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