Предмет: Геометрия, автор: dtdtyf8gi

Помогите СРОЧНО ГЕОМЕТРИЯ !!!!

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Автор ответа: iliycagan

Ответ:115°

Объяснение: угол ВАС=Углу ВСА т.к. углы при основании равнобедренного треугольника равны значит 180°-угол АВС=Угол ВСА,180-50 = 130° если угол ВАС=углу ВСА = 130: 2= 65° т.к. внешний угол треугольника равен сумме двух не смежным с ним то угол ВАС + угол АВС = углВСD 50°+65°=115°

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