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В трапеции ABCD AD-больше основании.Через вершину B проведена прямая, параллельная CD, до пересечения CAD в точке E. PтреугольникаABE=17см и BC=3см.Найти периметр трапеции
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решение задачи - в файле
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Автор:
bridget - 6 лет назад
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