Предмет: Русский язык, автор: MashaPavlova201

найдите третий угол треугольника если два из них равны 30* и 70*

Ответы

Автор ответа: TheNikoo

10

сумма углов треугольника равна 180 градусов.
следует: 180-(70+30) =80°

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