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2 năm trước
1 câu trắc nghiệm nên làm nhanh và đúng nha Cho tam giác ABC vuông ở A,đường cao AH,biết AB = 6cm,BH = 3 cm.Độ dài BC =? A.BC = 10cm B.BC =11cm C.BC = 12cm D.BC = 13cm
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