Quay lại đáp án

	3	sửa đáp án		Sửa 07-12-12 12:38 AM GreenmjlkTea FeelingTea 1
Gọi G, H là trung điểm của DC, DBM, N là trong tâm $\Delta$ABD, $\Delta$ADC=>AN/ AG= AM/AH= 2/3=> MN// GH=> MN//(BCD) Gọi G, H là trung điểm của DC, DBM, N là trong tâm $\Delta$ABD, $\Delta$ADC=>AN/ AG= AM/AH= 2/3=> MN// GH=> MN//(BCD) Gọi G, H là trung điểm của DC, DBM, N là trong tâm $\Delta$ABD, $\Delta$ADC=>AN/ AG= AM/AH= 2/3=> MN// GH=> MN//(BCD)

	2	sửa đáp án		Sửa 06-12-12 10:08 PM GreenmjlkTea FeelingTea 1
Gọi G, H là trung điểm của DC, DBM, N là trong tâm $\Delta$ABD, $\Delta$ADC=>AN/ AG= AM/AH= 2/3=> MN// GH=> MN//(BCD) Gọi G, H là trung điểm của DC, DBM, N là trong tâm $\Delta$ABD, $\Delta$ADC=>AN/ AG= AM/AH= 2/3=> MN// GH=> MN//(BCD) Gọi G, H là trung điểm của DC, DBM, N là trong tâm $\Delta$ABD, $\Delta$ADC=>AN/ AG= AM/AH= 2/3=> MN// GH=> MN//(BCD)

	1	tạo mới		Trả lời 06-12-12 10:05 PM GreenmjlkTea FeelingTea 1
Gọi G, H là trung điểm của DC, DBM, N là trong tâm $\Delta$ABD, $\Delta$ADC=>AN/ AG= AM/AH= 2/3=> MN// GH=> MN//(BCD)

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hoahoa.nhynhay: . 11/5/2018 1:39:46 PM
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