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初中数学：若∠CAE=30°，怎么求∠ACF的度数？等腰直角三角形
初中数学：若∠CAE=30°，怎么求∠ACF的度数？等腰直角三角形
初中数学，等腰三角形，等边三角形，线段垂直平分线，培优专题103/143
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