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ngocbuoc36
2 năm trước
cho M là một điểm tùy ý trong tam giác ABC Gọi O, P, Q lần lượt là trọng tâm của tam giác MBC ,MCA ,MAB biết diện tích tam giac ABC=810 cm vuông. Tính diện tích tam giác MPQ CHỈ GHI ĐÁP ÁN
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