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如图,已知点B,E,C,F在一条直线上,AB=DF,AC=DE,∠A=∠D. (1)求证:AC∥DE; (2)若BF=13,EC=5,求BC的长.
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教案备课库《2016-2017学年山东省济宁市兖州区八年级(上)期中数学试卷》真题及答案
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