Предмет: Математика, автор: yeban94

В равнобедренном треугольнике один из внешних углов равен 80. Найдите углы при основании.

Пожалуйста пожалуйста решите очень нужно

Ответы

Автор ответа: Пеппер
0

Ответ:

40°  и  40°

Пошаговое объяснение:

Внешний угол треугольника равен сумме двух внутренних углов, не смежных с ним; углы при основании равнобедренного треугольника равны.

∠1=∠2=80:2=40°

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