Предмет: Геометрия, автор: zhifer

на рисунке 113 найдите градусную меру угла x

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Ответы

Автор ответа: darya0sushkova

прямые a и b параллельные, т.к. накрест лежащие углы равны (те которые по 80°)
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x=углу который 40° (как соответственные)

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