把等腰三角形、线段的垂直平分线以及角的平分线设计在同一个问题中,全面考查对三角形的认识和理解,有利于学生感受数学的整体性.这是中考题的一种新的命题思路.下面举例予以说明.一等腰三角形与线段的垂直平分线联手例1如图1,点E、F在BC上,AF、DE相交于点G,H为EF的中点.BE=CF,AB=DC,∠B=∠C.M为GH上一点,求证:ME=ME分析:欲判定MM=MF.可判定GH垂直平分 The isosceles triangle, the vertical bisector of the line segment and the bisector of the angle are all designed in the same issue, so it is helpful for the students to feel the integrity of the mathematics in a comprehensive way.This is a new proposition of the test questions The first example is shown in Figure 1, point E, F on BC, AF, DE intersect at point G, H is the midpoint of EF. BE = CF , AB = DC, ∠B = ∠CM for GH last point, verify: ME = ME Analysis: To determine MM = MF. Can be determined GH vertical bisector