Предмет: Геометрия, автор: shumv

AО - бісектриса △ ABC, AB = 20 см, АС = 12 см. Менший з відрізків, на які бісектриса АО ділить сторону ВС, дорівнює 4 см. Знайди ВС.

Ответы

Автор ответа: liftec74

Ответ: 10 2/3 см

Объяснение:

По свойству биссектрисы AB/AC=BO/OC

=> OC=4 cm

=> 20/12=BO/4

=> 20*4/12=BO

=> BO=20/3

=> BC=OC+BO=4+20/3 = 32/3 см

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