Предмет: Геометрия, автор: Нюк3333

Сумма одного из внутренних углов и угла, вертикального с ним, равна 240°. Найдите углы, соответственный с данным углом.
2 задание
∠2=30°, то как изменить ∠8, чтобы прямые A и B были параллельными
Помогите пожалуйста

Ответы

Автор ответа: aleksejxarchen

пусть внутренний угол х, а вертикальный с ним у, по определению вертикальные углы равны, значит х=у=240:2=120

Соответственные углы то же равны значит угол соответственный углу х, то же равен 120 (град).

Ответ: 120(град)

Автор ответа: Нюк3333

спасибо, а 2 незнаешь?

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