# complete quadrilateral

Let $ABCD$ be a quadrilateral^{}. Let $\{F\}=AB\bigcap CD$ and
$\{E\}=BC\bigcap AD$. Then $AFCE$ is a *complete
quadrilateral ^{}*.

The complete quadrilateral has four sides : $\overline{ABF}$, $\overline{ADE}$, $\overline{BCE}$, $\overline{DCF}$, and six angles: $A$, $B$, $C$, $D$, $E$, $F$.

Title | complete quadrilateral |
---|---|

Canonical name | CompleteQuadrilateral |

Date of creation | 2013-03-22 14:05:27 |

Last modified on | 2013-03-22 14:05:27 |

Owner | vmoraru (1243) |

Last modified by | vmoraru (1243) |

Numerical id | 5 |

Author | vmoraru (1243) |

Entry type | Definition |

Classification | msc 51-00 |