Construct the linkage to draw the lemniscate as thus: |

Construct the linkage to draw the lemniscate as thus: |

Construct the linkage to draw the lemniscate as thus: |

Construct the linkage to draw the lemniscate as thus: |

Construct the Peaucellier's cell. |

Construct the linkage to draw the ellipse as thus: |

Construct the linkage to draw the ellipse as thus: |

Construct the linkage to draw the ellipse as thus: |

Construct the linkage to draw the ellipse as thus: |

Construct the linkage to draw the ellipse as thus: |

Construct the linkage to draw the ellipse as thus: |

Construct the "triangle dance". |

Construct the "rhombus dance". |

Construct the linkage to draw the ellipse as thus: |

Construct the linkage to draw the ellipse as thus: |