Предмет: Математика, автор: alisagres123

геометрия 7 класс,ребята срочно нужно​

Приложения:

Ответы

Автор ответа: Slavchansky
2

Пошаговое объяснение:

Рассмотрим прямоугольный тр. BAD

AB - гипотенуза данного тр. , а BD - катет , лежащий напротив уг. BAD

AB=2BD => уг. BAD = 30° ( Катет прямоугольного треугольника, лежащий против угла 30° , равен половине гипотенузы )

Т.к тр. ABC - равнобедренный , то уг. BAD = уг. BCD

По сумме уг.тр. найдем ABC :

180°-(2×30)=120°

Ответ : 30° ; 30° ; 120°

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