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1-4 класс

Найти площадь равнобедреной трапеции,разность оснований которой равна2,диагональ Равна 13и делится точкой пересечения диагоналейв отношении 3:4

Алина 17 июня 2018 г., 14:04:31 (5 лет назад)
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