Предмет: Геометрия, автор: Tania3214

Сума внутрішніх кутів трикутника і одного з його зовнішніх кутів дорівнює 270. Визначте кути трикутника,якщо різниця його кутів, не суміжних із зовнішнім дорівнює 20

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Автор ответа: Пеппер

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