实质追索本章知识分两大部分 ,第一部分是空间直线和平面 ,第二部分是简单几何体 .直线和平面是最基本的几何元素 ,空间直线和平面的位置关系是立体几何的基础知识 .本部分内容对于同学们在已有的平面图形知识的基础上 ,建立空间概念 ,实现从平面几何到立体几何观念这一提升和 The substantive recourse This chapter consists of two parts: the first part is the space line and the plane, the second part is the simple geometry. The line and the plane are the most basic geometric elements, and the positional relationship between space lines and planes is the basic knowledge of the three-dimensional geometry. Part of the content for the students based on the existing knowledge of the plane graphics, the establishment of the concept of space, from the plane geometry to the three-dimensional geometric concept of this promotion and