Предмет: Геометрия, автор: Vavilon

Из точки С окружности проведен перпендикуляр CD к диаметру АВ. Докажите, что CD2 = AD•BD.

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Автор ответа: haker2012

это ж теоремка. Произведение отрезков хорд равно произведению отрезков диаметров

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Task 5. PHRASE MATCH: (Sometimes more than one choice is possible.)

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Вот текст,если поможет
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