在平面几何中,证明两线段或角的不等是基本证题之一。掌握证不等的方法与技巧是在论证这类问题中减少盲目性之所必须。因此,愿将个人的点滴体会写出来,供同志们研究、讨论。一、关于证不等的基本方法在应用有关定理证不等时,我们要做的大量工作是设法造成可使用定理的条件。这将运用如下的方法及技巧。 1.合同变换法 In plane geometry, it is proved that the unequal line segment or angle is one of the basic test questions. The methods and techniques for grasping the incompatibility are necessary to reduce blindness in the demonstration of such problems. Therefore, I would like to write my personal experience for comrades to study and discuss. First, the basic methods of unequal certificates When applying the relevant theorem certificates, we have to do a lot of work is to create conditions for the use of theorems. This will use the following methods and techniques. 1. Contract transformation method