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BALTIC-WAY 2021 Problem 12

    Let II be the incentre of a triangle ABCA B C. Let FF and GG be the projections of AA onto the lines BIB I and CIC I, respectively. Rays AFA F and AGA G intersect the circumcircles of the triangles CFIC F I and BGIB G I for the second time at points KK and LL, respectively. Prove that the line AIA I bisects the segment KLK L.

    Dataset text NuminaMath olympiads. Quoted with source.

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