The theorem was proved by Giovanni Ceva in his 1678 work De lineis rectis, but it was also proved much earlier by Al-Mu'taman ibn Hűd, an eleventh-century king of Saragossa.

See also:
Gergonne Point
Menelaus' theorem
Blanchet Theorem
Nagel Point
Nagel Point Flowchart Proof
Ceva's Theorem Puzzle
 

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Last updated: August 31, 2007