Предмет: Геометрия, автор: polli222s212118

помогите решит пожалуйста ​

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Автор ответа: nesselrode
0

треугольник abc- равнобедренный, т.к. ab=bc.

Исходя из того что треугольник равнобедренный, делаем вывод, что bd как биссектриса, будет еще и высотой и медианой. Тогда ad=dc, т.к.bd- медиана.

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