相似三角形的判定方法中以“两角对应相等的两个三角形相似”最为常用.相比之下,有两边对应成比例且夹角相等的两个三角形相似(简称“边角边”),这个定理应用的机会要少一些,但不常用不等于不重要,有些题非用不可,下面举例进行说明. Similar triangles in the decision method to “two triangles correspond to the same two triangles similar ” In contrast, the two sides of the corresponding proportional and the same angle of the two triangles are similar ( “edge ”), This theorem has less chance of being applied, but not commonly used does not mean that is not important, some questions useless, the following examples illustrate.