从多个角度思考,探索一题多解,以不同的思维方式揭示条件和结论之间的本质联系,从不同角度和方向思考实现同一目标的解决方案,这有利于巩固基础知识,拓宽思路,使思维多方向发展,本文以北师大版《数学》九年级下册第189页第14题为例,向同学们讲解如何从多个角 Thinking from multiple angles, exploring multiple solutions to one question, revealing the essential relationship between conditions and conclusions in different ways of thinking, and thinking about solutions to achieve the same goal from different perspectives and directions, which is conducive to consolidating basic knowledge and broadening ideas. To make the development of thinking in many directions, this article uses the 14th title of the 189th book of the 9th grade of Mathematics of the Beijing Normal University as an example to explain to the students how to get from multiple corners.