Предмет: Геометрия, автор: олеся84959

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Автор ответа: 1memes1

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треугольник abc равнобедренный углы acb и bac равны
треугольник edc равнобедренный углы ecd b dec равны
уголы ecd и acb равны
а значит и угол bac = углу cde

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