在平面几何教学中精选范例或习题时,常会在浩瀚的题海中发现诸多相仿、或实质雷同、或逐阶而进的相关题。重视处理好这类相关题对诱发学生的的能动因素、活跃学生的思维、开拓学生的视野、减缓学习平面几何的难度都有积极的作用。本文主要对平面几何中某些相关问题作些粗浅的探讨。 When selecting examples or exercises in the teaching of plane geometry, you will often find many similar problems in the vast sea of ​​topics, or similarities or progressions. Paying attention to dealing with such related questions has a positive effect on stimulating the student’s motivational factors, revitalizing student’s thinking, opening up students’ vision, and reducing the difficulty of learning plane geometry. This article mainly discusses some related issues in plane geometry.