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2018年秋九年级数学上册第四章图形的相似4.2平行线分线段成比例课件（新版）北师大版.pptx

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第2课时 平行线分线段成比例,知识目标,目标突破,第四章 图形的相似,总结反思,知识目标,2 平行线分线段成比例,目标突破,目标一 利用平行线分线段成比例进行计算,2 平行线分线段成比例,2 平行线分线段成比例,2 平行线分线段成比例,2 平行线分线段成比例,目标二 利用平行线分线段成比例的推论证明比例线段,2 平行线分线段成比例,2 平行线分线段成比例,2 平行线分线段成比例,

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