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一、考纲的要求(一)立体几何初步1.空间几何体(1)认识柱、锥、台、球及其简单组合体的结构特征,并能运用这些特征描述现实生活中简单物体的结构。(2)能画出简单空间图形(长方体、球、圆柱、圆锥、棱柱等简易组合)的三视图,能识别上述的三视图所表示的立体模型,会用平行投影与中心投影两种方法画出简单空间图形的三视图与直观图,了解空间图形的不同表示形式。(3)了解球、棱柱、棱锥、台的表面积和体积的计算公式。
First, the requirements of the syllabus (A) of the initial three-dimensional geometry 1. Spatial geometry (1) recognize the column, cone, table, ball and its simple combination of structural features, and can use these features to describe the structure of real-life simple objects. (2) A three-dimensional view of a simple space figure (simple combination of cuboids, balls, cylinders, cones, prisms, etc.) can be drawn and the three-dimensional model represented by the above three views can be identified and drawn by both the parallel projection and the center projection A simple three-dimensional view of space graphics and intuitive view of space to understand the different forms of graphics. (3) to understand the ball, prism, pyramid, table surface area and volume of the formula.