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ABCD квадрат, O его центр, BE=BF. Доказать, что точки CKLON лежат на одной окружности.

// задача M2826 из Кванта, предложил А.Палеев (9 кл.)
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ABCD квадрат, O его центр, BE=BF. Доказать, что точки CKLON лежат на одной окружности.

// задача M2826 из Кванта, предложил А.Палеев (9 кл.)

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