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ping ji zheng ti zhong de xian duan can shu fa
Author(s): 
Pages: 35-36
Year: Issue:  4
Journal: High-School Mathematics
Keyword:  线段参数; 证题; 勾股定理; 参数法; 内切圆; 余弦定理; 数学; 正方形; 代数; 中线;
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