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manhh4147
2 năm trước
Cho tam giác ABC . Gọi M, N ,P theo thứ tự là trung điểm các cạnh AB, AC, BC. Tính chu vi của tam giác MNP , biết AB = 12 cm, AC = 14 cm , BC =16 cm Giúp mình với ạ :< gấp
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