Предмет: Геометрия, автор: sam0zvanka

Дано:ACD угол ACB=90 градусов: угол В=40 градусов: Найти: острые углы треугольника ACD.

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Автор ответа: Taigaka

0

Теорема о сумме углов треугольника. Сумма углов треугодьника равна 180°. Ну а острый угол это все <90°)

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