三角形全等是初中几何重要基础之一,也是中考必考考点之一,一般三角形全等的判定方法有SAS、ASA、AAS、SSS,每种方法都有三个条件,在具体问题中,往往只有一两个条件在题设中直接给出,其余的条件往往隐含于题设或图形中,有时还需添加辅助线才行,现举例说明怎样探索三角形全等的条件.一、利用公共边或公共角 Triangle congruent is one of the important bases of junior middle school geometry, and also one of the test centers in the middle school entrance examination. There are three methods for determining the congruent triangle. SAS, ASA, AAS, SSS, each method has three conditions. Of the specific problems, One or two conditions given directly in the title, the rest of the conditions are often implied in the title or graphics, and sometimes need to add auxiliary line Caixing, an example of how to explore triangle congruent conditions. First, the use of public side Or public angle