Théorie et applications des équipollences, par C. A. Laisant.

EXERCICES DIVERS. On a donc, par raison de symetrie, 73 C B' _ A1C' BB' CC' C1A A1B AA' BB' B A' k2 AA' c T- /c -- ' BiC k CC' k - k -- ' De la encore cette consequence C1B' A C' B1A' AIB B1C CA1 Nous laissons au lecteur le soin de la discussion, selon les diverses valeurs positives ou negatives de k. 74. THjOREME. - Si par un point quelconque E (fig. 8), pris i l'in terieur d'unl parallelogRcrmnme ABCD, on mene des paralleles HG, FK aux deux cotes, les trois diagonales AC, FG-, HK concourent en un meme point. Fig. i8. Soient AB B, AF- fB, On a AD- D, AH - hD. AL = AF - FL ou x AC = AF 4-yFG, c'est-a-dire x(n + - D) = B -y (B + hD -fB).

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Title
Théorie et applications des équipollences, par C. A. Laisant.
Author
Laisant, C.-A. (Charles-Ange), 1841-1920.
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Page 58
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Paris,: Gauthier-Villars,
1887.
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"Théorie et applications des équipollences, par C. A. Laisant." In the digital collection University of Michigan Historical Math Collection. https://name.umdl.umich.edu/abn7895.0001.001. University of Michigan Library Digital Collections. Accessed June 14, 2025.
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