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complete quadrilateral (Definition)

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$.

\includegraphics{comp}



"complete quadrilateral" is owned by vmoraru.
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Cross-references: angles, sides, quadrilateral
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This is version 2 of complete quadrilateral, born on 2003-12-05, modified 2003-12-05.
Object id is 5469, canonical name is CompleteQuadrilateral.
Accessed 2476 times total.

Classification:
AMS MSC: 51-00 (Geometry :: General reference works )
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