“几何图形初步”一章是初中阶段“图形与几何”领域的第一章,在这里,我们将会接触到许多立体图形与平面图形,了解它们之间的关系,并通过直线、射线、线段和角去认识更多的图形,进一步欣赏丰富多彩的图形世界.几何体现了人们对空间的把握,要想学好几何,就必须具备良好的空间观念.什么是空间观念呢?课程标准是从四个方面加以描述的:空间观念主要是指根据物体特征抽象出几何图形,根据几何图形想象出所描述的实际物体;想象出物体的方位和相互之间的位置关系;描述图形的运动和变化:依据语言的描述画出图形等.空间观念是空间想象力的 The chapter “Geometry Preliminary” is the first chapter in the junior high school phase of “Graphics and Geometry,” where we will be exposed to many stereoscopic and planar graphics, to understand the relationship between them, , Rays, line segments and corners to understand more graphics and further appreciate the rich and colorful world of graphics Geometry reflects the people’s grasp of space, to learn geometry, we must have a good concept of space What is the concept of space? The standard is described in four aspects. The concept of space mainly refers to abstracting geometric figures according to the characteristics of the objects, imagining the actual objects described according to the geometric figures, imagining the orientation of the objects and the positional relationship among them, describing the movements of the figures And change: Drawing graphics based on language description, etc. Space concept is spatial imagination