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MathNet 2012 Question 50

Math Olympiad Vault · MathNet 2012

Question 50

A convex hexagon $ABCDEF$ is given. It appears that $\angle FAE = \angle BDC$, and that each of the quadrilaterals $ABDF$ and $ACDE$ is cyclic. Prove that the lines $BF$ and $CE$ are parallel.

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