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补形法就是将问题中的非规则、非特殊图形通过添加辅助线转化为熟悉的特殊图形或规则图形,使隐含条件凸显,数量关系明确,从而找到解决问题的思路和方法.1.补成等腰三角形
The complement method is to transform the irregular and non-special graphics in the question into a familiar special graphic or regular graphic by adding auxiliary lines, so that the implicit conditions are highlighted and the quantitative relationship is clear, so as to find the way and method to solve the problem. Isosceles triangle