#геометрия #задача
В треугольнике ABC чевианы AD, BE, CF пересекаются в точке P, AH — высота. Точки H1 и H2 — образы точки H при симметрии относительно DE и DF соответственно. Докажите, что A, H1, H2 лежат на одной прямой.
BY JustScience | Олимпиадная Математика
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