Предмет: Геометрия, автор: yannbadboyyy

3. Используя теорему о внешнем угле треугольника, найдите угол С. (3б)

Приложения:

Ответы

Автор ответа: Пеппер

1

Ответ:

82°

Пошаговое объяснение:

Внешний угол треугольника равен сумме двух внутренних углов, не смежных с ним.

150=12х+10+9х+14

21х=126

х=6

∠С=6*12+10=82°

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