1引言“轴对称图形”是浙教版《数学》七年级(下)第2章第1节的内容.它是在小学的初步认识轴对称图形的基础上,为进一步学习轴对称变换(反射变换)的需要提出来的,是对轴对称图形的再认识.中学对轴对称图形的研究比起小学来上了一个较大的台阶:研究对象从生活中的轴对称图形过渡 1 Introduction “Axisymmetric graphics” is the content of Chapter 2, Section 1, of the seventh grade (second) of mathematics in the Zhejiao edition.It is based on the preliminary understanding of axisymmetric graphics in primary schools, in order to further study the axisymmetric transformation Transformation) need to be raised is the re-understanding of the axisymmetric graphics.Study on the axisymmetric graphics in secondary school compared to a big step up to the elementary school: the object of study from the life of the axisymmetric graphics transition