一、教材分析(一)本章体系(二)内容安排本章包括4节内容,前3节主要讨论平面内两条直线的位置关系,重点是垂直和平行关系,第4节是有关平移变换的内容。 First, the analysis of teaching materials (A) this chapter system (2) Content Arrangement This chapter consists of four sections, the first three sections mainly discuss the positional relationship between two straight lines in the plane, the focus is on vertical and parallel relations, Section 4 is about the translation transformation content .