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МатематикаВопрос:
If one of the angles of a triangle is right, then the triangle is right-angled.
Ответ:
Ответ:
1. Верно
Обоснование:
Это определение прямоугольного треугольника. Треугольник называется прямоугольным, если один из его углов равен 90°.
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