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Gergonne triangle (Definition)

Let $ABC$ be a triangle and $D,E,F$ where the incircle touches the sides $BC,CA,AB$ respectively. Then triangle $DEF$ is called the Gergonne triangle or contact triangle of $ABC$.

\includegraphics{gergonne}



"Gergonne triangle" is owned by drini. [ owner history (1) ]
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See Also: triangle, Gergonne point, incircle, incenter, centroid

Other names:  contact triangle
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Cross-references: sides, incircle, triangle
There are 2 references to this entry.

This is version 2 of Gergonne triangle, born on 2002-01-08, modified 2002-05-17.
Object id is 1452, canonical name is GergonneTriangle.
Accessed 3891 times total.

Classification:
AMS MSC: 51-00 (Geometry :: General reference works )
Pending Errata and Addenda
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