Предмет: Геометрия, автор: kapitandedpul51

В равнобедренной трапеции угол при основании равен 30°, а высота равна 12 см.
Найдите полусумму оснований трапеции, если в неё вписана окружность.
Ответ дайте в сантиметрах.

Ответы

Автор ответа: vladyandymokk13

Сумма двух противоположных сторон четырехугольника, в которой вписана окружность, равна сумме двух других противоположных сторон

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