quy20071616 quy20071616

31-07-2021
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Cho tam giác ABC có AB = 4cm, BC = 8cm, AC = 6cm. Một đường thẳng cắt các cạnh AB và AC theo thứ tự ở M và N sao cho AM = 1cm, AN = 1,5cm. Độ dài MN là :

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ezraishnaineh ezraishnaineh

31-07-2021

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