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KöMaL 2025 B5501

    The incircle of triangle ABCABC is tangent to sides BCBC, CACA and ABAB at points DD, EE and FF, respectively. Let GG be the antipode of point FF on the incircle. Lines GDGD and GEGE intersect line ABAB at points D′D' and E′E', respectively. Prove that circles AED′AED' and BDE′BDE' intersect each other on the incircle.

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