**r259** |
Brocard
points |

**r265** |
perspective,
circumconic,
symmedian
point, tangential triangle |

**r295** |
pedal triangle,
Simson
line, *homothetic triangles* |

**r358** |
cevian
triangle, perspective,
desmic
product,
isogonal points,
complement |

**r488** |
symmedian
point,
Brocard points,
isodynamic
points, Lemoine line |

**r518** |
isogonal
of the infinite point, isogonal points,
circumcenter |

**r519** |
isogonal
of the infinite point, isogonal points,
circumcenter |

**r520** |
isogonal
of the infinite point, isogonal points,
circumcircle,
circumconic |

**r660** |
cevian
triangle, symmedian point, Brocard
ellipse |

**r807** |
Stammler
hyperbola,
cevian
triangle, circumconic,
isogonal
points,
point X(115),
point
X(125) |

**r811** |
pedal triangle,
*similar
triangles* |

**r875** |
isogonal
points, ninecenter,
orthocenter |

**r876** |
pedal triangle,
*similar
triangles* |

**r889** |
perspective,
point
X(104), incenter |

**r937** |
symmedian
point |

**r941** |
circumcenter,
circumcircle |

**r963** |
circumcenter,
circumcircle,
*harmonic
points, inverse points* |

**r971** |
circumcenter,
Euler
line,
perspective |

**r972** |
circumcenter,
Euler
line,
perspective,
circumcircle,
point
X(468) |

**r979** |
orthocenter,
circumcenter,
centroid,
medial
triangle, orthic triangle,
*homothetic
triangles, harmonic points* |

**r991** |
orthocenter,
circumcenter |

**r1015** |
inconic,
complement,
symmedian
point |

**r1016** |
perspective,
Euler
line,
orthic
triangle |

**r1018** |
incenter,
excenters,
circumcenter |

**r1020** |
centroid,
orthocenter,
circumcenter,
point
X(186), point X(858) |