Предмет: Геометрия, автор: Диана2393

На заданном рисунке OB биссектриса угла AOC.
- Найдите угол DOA, если угол AOB равен 70°.
- Постройте угол DOE, который будет вертикальный COB. Рассчитаете его градусную меру.
- Сколько градусов будет в угле DOE?

Ответы

Автор ответа: margevich75

а рисунок какой? нужен рисунок

Автор ответа: Диана2393

http://mathematics-tests.com/algebra-7-klass/kontrolnye-raboty/geometriya-atanasyan вариант 2

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