r8 | pedal triangle, centroid, similar triangles |
r9 | circumcenter, symmedian lines |
r10 | similar triangles |
r11 | first Brocard triangle, centroid, perspective |
r21 | first Brocard triangle, isotomic points, tripole |
d | first Brocard parabola |
d | Johnson triangle |
d | McCay circles |
r679 | first Brocard triangle, circummedial triangle |
r680 | circumcircle, Brocard circle, circumcenter, Apollonian circles, inverse points |
r689 | circumcenter, Apollonian circles, Brocard points, pedal triangle, Beltrami points, similar triangles |