r229	cevian triangle, circumconic, perspective
r650	medial triangle, intouch triangle, Steiner inellipse,perspective
r651	medial triangle, intouch triangle, Feuerbach point, perspective
r696	pedal triangle, cevian triangle, perspective
r1452	isogonal points, pedal triangle
r1493	cevian triangle
r1494	cevian triangle, perspective
r1604	cevian triangle, perspective
r1651	Feuerbach point, medial triangle, extouch triangle, perspective
r1794	circumconic, perspective, cevian triangle
r1811	pedal triangle, medial triangle, perspective, ninecircle, pedal circle