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yi dao ji he ti de ling jie yu bian shi gou zao deng bian san jiao xing qiao jie ji he ti
Author(s): 
Pages: 37-38
Year: Issue:  4
Journal: ZHONGXUE SHUXUE ZAZHI(CHUZHONG BAN)

Keyword:  等边三角形变式问题几何题构造巧解函数知识平行四边形正弦定理;
Abstract: 文[1]中介绍了一道几何题目,甘志国老师给出了两种解答:一种方法是运用高中正弦定理、三角函数知识作解;另一种方法是运用初中对称性、平行四边形知识作解.笔者在仔细研读后产生了一些不同的想法,可以构造等边三角形来求解,且在原题的基础上变换条件,产生变式问题,与读者共飨.
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