三角形全等是初中阶段几何说理的基本工具和手段,利用两个三角形全等,我们可进一步说明有关与线段相等、角相等的各种几何问题。但是,许多同学却在该使用哪条判定方法上出现模棱两可的情况,有些同学甚至不知道该用哪条判定方法。那么,我们到底该如何考虑两个三角形全等的问题呢?说理时又该如何入手呢? Triangle congruent is the basic tool and means of geometric reasoning in junior middle school. By using two triangles congruent, we can further explain various geometric problems about the same angle and the same angle as the line segment. However, many students are ambiguous about which method to use. Some students do not even know which method to use. So, how do we think about the two triangle congruent questions?