在初中几何中,经常会遇到证明两个三角形相似的问题,许多同学对一些复杂的图形感到难以下手.本文介绍一种分离图形的证法,供同学们学习时参考例1如图1,在ABC中,DAB与EAC分别是以AB、AC为底的等腰三角形,且∠BDA=∠CEA.求证:ADE∽ABC.分析要证ADE∽ABC,在图1中不够直观,可把两个 In junior high school geometry, we often encounter problems that prove that the two triangles are similar. Many students find it difficult to start with some complicated graphics. This article describes a method for separating graphics. In ABC, DAB and EAC are isosceles triangles based on AB and AC, respectively, and ∠BDA=∠CEA. Proof: ADE∽ABC. The analysis proves that ADE∽ABC is not intuitive in Figure 1. One