# Menelaus' Theorem

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In triangle ABC, let a line DEF intersect the two sides AC and BC and an extension of AB at F, E, and D. Then ADBECF = BDCEAF.

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Contributed by: Jay Warendorff (March 2011)

Open content licensed under CC BY-NC-SA

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detailSectionParagraph## Permanent Citation

"Menelaus' Theorem"

http://demonstrations.wolfram.com/MenelausTheorem/

Wolfram Demonstrations Project

Published: March 7 2011