Desargues' theorem

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Desargues' theorem

[dā′zärgz ‚thir·əm]
(mathematics)
If the three lines passing through corresponding vertices of two triangles are concurrent, then the intersections of the three pairs of corresponding sides lie on a straight line, and conversely.
References in periodicals archive ?
Schwartz, Desargues theorem, dynamics, and hyperplane arrangements, Geom.