Construct the pair of orthogonal tangents of the cardioid. |

Construct the cardioid sliding on a pair of perpendicular lines. |

Construct the tangent to the deltoid lying within the curve. |

Construct a cardioid "tangent" to a fixed deltoid at three collinear points. |

Construct a deltoid sliding on a fixed cardioid. |

Construct the pair of orthogonal tangents of the deltoid |

Construct the deltoid sliding on a pair of perpendicular lines. |

Construct the deltoid sliding inside the astroid. |

Construct the deltoid sliding inside the nephroid. |

Construct the cardioid sliding inside the nephroid. |

Construct an animation of three concurrent tangents of the nephroid. |

Construct an animation displaying a cardioid sliding along three fixed concurrent lines meeting at 120 degrees. |

Construct an animation of three concurrent tangents of the astroid. |

Construct an animation displaying an astroid sliding along three fixed concurrent lines meeting at 120 degrees. |