Предмет: Геометрия, автор: shumkova96

на рисунке BC=DC,угол BCA=углуDCA.Докажите, что AB=AD

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Автор ответа: Shelkovaia

Треугольники равны по двум сторонам и углу между ними.
BC=DC по условию
CA-общая
<ACD=<ACB-по условию
В равных треуг. соответственные элементы равны, значит АB=AD

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