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TUYMAADA 2024 S4

  • Senior

A triangle ABCABC is given. The segment connecting the points where the excircles touch ABAB and ACAC meets the bisector of angle CC at XX . The segment connecting the points where the excircles touch BCBC and ACAC meets the bisector of angle AA at YY . Prove that the midpoint of XYXY is equidistant from AA and CC .

Dataset text AI-MO AoPS. Quoted with source.

Official text: Tuymaada Olympiad 2024 official paper, page 1.

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