Geodesic
Desargues' Configuration in a Special Layout
Journal for geometry and graphics, Tome 7 (2003) no. 2, pp. 191-2.

Voir la notice de l'article provenant de la source Heldermann Verlag

A special case of Desargues' configuration will be discussed, where one triangle is inscribed into a conic and the other is circumscribed about the same conic. These two triangles are in a correspondence called a Desargues collineation KD. Three theorems have been formulated and proved. One of them characterizes the central collineation KD. In a Desargues collineation the base conic will be transformed into another conic. Different cases are discussed. In the case of a base circle the center of the collineation KD coincides with the Gergonne point.
Classification : 51M35, 51M05
Mots-clés : Desargues configuration, collineation 
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B. Wojtowicz. Desargues' Configuration in a Special Layout. Journal for geometry and graphics, Tome 7 (2003) no. 2, pp. 191-2. http://geodesic.mathdoc.fr/item/JGG_2003_7_2_JGG_2003_7_2_a5/