Pappus's Hexagon Theorem

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Let A, B, and C be three collinear points and D, E, and F be three other collinear points. Let AE ⋂ BD = X, AF ⋂ CD = Y, and BF ⋂ CE = Z. Then X, Y, and Z are collinear.

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Contributed by: Paul Abbott (March 2011)
Open content licensed under CC BY-NC-SA


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