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初中数学：怎么求∠COE的度数？斜边上的中线，合肥包河期末考试
初中数学：怎么求∠COE的度数？斜边上的中线，合肥包河期末考试
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126/169
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