Friday, August 1, 2008

Ceva's Theorem Proof

Proposition
Let ABC be a triangle and lines (or cevians) AD, BE, and CF joining vertices with opposite sides intersect at a single point P. Prove that: (AF.BD.CE)/(FB.DC.EA)=1. The converse is also true.



See complete interactive proof with animation and key concepts
Level: High School, SAT Prep, College geometry

Post your solutions or ideas in the comments.