在几何中 ,证明两角相等是我们经常遇见的问题之一 ,它所涉及的知识内容十分广泛 ,是平面几何中一项重要的基本技能 ,因而成为中考的一个热点问题 .解决此类问题的依据很多 ,本文拟给予归类说明 ,供读者参考 ,愿能对读者有所启迪 .一 .利用三角形中“等边对等角”来证当所要证 In geometry, it is proved that the equality of two angles is one of the problems we often meet. It involves a wide range of knowledge and is an important basic skill in plane geometry. Therefore, it has become a hot topic in the examination. Solving such problems According to many, this article intends to give a description of classification for readers’ reference and is willing to be inspiring to readers. 1. Use the “equilateral isochronal angle” in triangles to prove what you need.