Предмет: Геометрия, автор: ЭльОрл

треугольник ABC равнобедренный с основанием BC угол a в 2 раза меньше угла B. Найдите величину угла при основании C. Срочно! С ответом, решением и чертежом. Даю 30 баллов (Просто нету уже)

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Автор ответа: yeapyeap68

Решение во вложении....

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