Предмет: Геометрия, автор: aleksandrati898

ДАМ 98 БАЛЛОВ ДВЕ ЗАДАЧИ

2. В прямоугольном треугольнике RDK с прямым углом D, RD = 5 см, DK = 5√3 см, DF –медиана. Найдите ∠ RDF.

3. В равнобедренной трапеции c основаниями 5 см и 9 см угол при большем основании равен α. Найдите периметр и площадь трапеции.

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