№59 (Воскресная заминка в воскресенье)
Предлагается завершить неделю следующей нетрудной задачей
O и H - центр описанной окружности и ортоцентр треугольника ABC соответственно. Угол A = 120 градусов.
Доказать, что OH = АВ + АC
(На картинке опечатка, отмечены не те отрезки)
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