**r25** |
Fermat
points, *equilateral triangle* |

**r338** |
circumcenter,
perspective |

**r381** |
pedal triangle,
isogonal
points, *homothetic triangles* |

**r441** |
centroid,
Steiner
inellipse |

**r494** |
Vecten
squares, centroid,
point
X(376),
*homothetic triangles* |

**r729** |
point X(376),
centroid |

**r1107** |
cevian
triangle, anticevian triangle,
orthologic
triangles |

**r1221** |
circumcenter,
circumcevian
triangle, perspective |

**r1460** |
isogonal
points |

**r1467** |
isogonal
points, orthologic triangles |

**r1667** |
centroid,
Fermat
points |

**r1764** |
antigonal
points,
medial triangle, circumcenter,
Parry
reflection point, perspective,
*homothetic
triangles* |

**r1876** |
ninecenter,
circumcenter,
complement |

**r1964** |
isogonal
points |

**r2040** |
incenter,
circumconic,
incentric
triangle, Spieker point, orthologic
triangles |

**r2050** |
orthologic
triangles |