r255 | Simson line, circumtangential triangle |
r615 | circumcircle, orthopole, Simson line |
r617 | inconic, anticomplement |
r621 | orthopole, orthocenter, isogonal points, circumconic |
r771 | circumtangential triangle, circumcircle, anticomplement |
r1217 | inconic, perspector, retrocenter |
r1377 | circumtangential triangle, De Longchamps point, homothetic triangles |
r1378 | circumtangential triangle, ninecircle, centroid, homothetic triangles |
r1379 | ninecircle, ninecenter, homothetic triangles |
r1380 | ninecircle |
r1381 | altitudes |
r1382 | ninecenter, circumcircle |
r1383 | orthocenter |
r1384 | ninecircle, altitude feet |
r1385 | ninecircle, point X(125), point X(74),Simson line |
r1386 | Morley triangle, homothetic triangles |
r1387 | ninecircle, ninecenter, homothetic triangles |
r1388 | ninecircle, Stammler circles, homothetic triangles |
r1894 | circumcircle, Simson line, medial triangle, radical center |