OIM 2024 Problem 2
Seja um triângulo acutângulo e sejam e os pontos médios de e , respectivamente. Dado um ponto no interior do segmento com , sejam e as interseções de e com e , respectivamente. Seja a interseção do circuncírculo do triângulo com o circuncírculo do triângulo . Se é o ponto médio de , demonstre que .
Official text Iberoamerican Mathematical Olympiad 2024 official paper, page 1. Quoted with source.
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