构造是一种重要的数学思想,它是创造力的较高表现形式.在数学解题中若能依据题目结构特征,类比相关知识,构造数学模型来寻找解题的切入点,常使解题思路突破常规,获得新颖、简洁、明快、精巧的解法.本文结合三角问题,例释如下.一、构造三角形或圆模型当所涉问题用常规方法难以找 Constructing is an important mathematical idea. It is a higher expression form of creativity. If you can use the structural features of a problem, analogize related knowledge, and construct a mathematical model to find the entry point for solving problems in a mathematical problem solving, often to solve problems. The idea breaks through the conventions and obtains a novel, concise, crisp, and elegant solution. This article combines the triangulation problems and illustrates the following: 1. Constructing a triangle or circle model When the problems involved are difficult to find with conventional methods