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九年级数学：怎么求AD和AB的比值？勾股定理，2020南京中考一模
九年级数学：怎么求AD和AB的比值？勾股定理，2020南京中考一模
初中数学，直角三角形，勾股定理及逆定理，基础训练，培优专题107/169
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