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KöMaL 2024 B5389

    Let II denote the incenter of acute triangle ABCABC. Let the incircle touch sides BCBC and ACAC at points DD and EE, respectively. Let HH denote the orthocenter of triangle ABCABC. Prove that if HH is on line segment DEDE, then line HIHI bisects side ABAB.

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