“几何几何尖尖角角,要想学好,背就学驼。”由此可见,学生对几何的畏惧。其实想要学好几何也并不难,最关键的是性质、定理能否记熟。当然仅记熟了性质、定理也不能完全做会每一道几何题,往往需要在图形中添加适当的辅助线,辅助线是解决几何问题时,为实现解题思路而架设的桥梁。添加辅助线是一种难度很大的工作。在学习中,有大部分学生害怕添加辅助线,因为他们 “Geometric geometry sharp corners, in order to learn, back to learn camel. ” This shows that students fear of geometry. In fact, it is not difficult to learn geometry. The key is whether the nature or theorem can be learned. Of course, only remembering the nature and theorem can not be done completely for each geometric problem. It is often necessary to add appropriate auxiliary lines in the graph. The auxiliary line is a bridge built to solve the problem when solving geometric problems. Adding an auxiliary line is a difficult job. In learning, most students are afraid to add guidelines because they