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duongnhung68
2 năm trước
1.Cho tứ giác abcd kẻ bt//cd(fEac)kẻ cg//ab(gebd) cm fg//ad 2.Cho tam giác ABC.trên AC lấy điểm M sao cho AM=2/5 AC .trên BC lấy K sao cho BK=1/3BC.đoạn thẳng BM cắt AK tại N> Tính tỉ số AN/AK
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