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考点1:空间几何体的结构、表面积与体积,三视图,直观图考纲解读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知道平行投影与中心投影的概念,了解空间图形的不同表示形式;3能画出简单空间图形(长方体、棱柱、圆柱、圆锥、球等及其简易组合)的三视图,能识别上述三视图所表示的立体模型,会用斜二侧法画出它们的直观图;4了解球、棱柱、棱锥、台的表面积和体积的计算公式(不要求记忆公式).
Test point 1: Structure, surface area and volume of space geometry, the three views, the visual outline of the syllabus 1 recognize the structural characteristics of columns, cones, tables, balls and their simple combination, and can use these features to describe the structure of simple objects in real life ; 2 know the concept of parallel projection and center projection to understand different representations of spatial figures; 3 can draw three views of simple spatial figures (cuboids, prisms, cylinders, cones, balls, and their simple combinations) The three-dimensional model represented by the view draws their visualization using the oblique two-sided method; 4 The formula for calculating the surface area and volume of the sphere, prism, pyramid, and stage (no memory formula required).