OMM 2024 Problem 4
Sea un triángulo acutángulo con ortocentro y sea un punto del segmento . La recta por y perpendicular a , corta a las rectas y en los puntos y , respectivamente. Muestra que la recta pasa por el ortocentro del triángulo .
Official text Mexican Mathematical Olympiad 2024 official paper, page 63. Quoted with source.
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