江苏省第15、16届初中数学竞赛的几何题均是与不等式有关的问题,对这类问题同学们感到难以入手,因此本文介绍一下初中阶段几何不等式证明的基本方法.一、应用三角形三条边的关系“三角形中任一边大于另两边之差而小于另两边之和”,应用三角形三条边的关系去 The geometry problems of the 15th and 16th junior mathematics competitions in Jiangsu province are all related to inequality. It is difficult for students to solve these problems. Therefore, this paper introduces the basic methods of the proof of geometric inequalities in junior high school. First, apply three sides of a triangle. The relationship between “anything in the triangle is greater than the difference in the other two sides but less than the sum of the other two sides”, applying the relationship of the three sides of the triangle