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立体几何是高中数学的重点内容,也是高考的必考内容.立体几何考查的立足点放在空间图形上,突出对空间观念和空间想象能力的考查.不仅有直接求多面体、旋转体的面积和体积问题,也有已知面积或体积求某些元素的量或元素间位置关系的问题.即使是考查空间线面位置关系的问题,也常以几何体为依托.因
The three-dimensional geometry is the key content of high school mathematics, and it is also a must-examination content of the college entrance examination. The standpoint of the three-dimensional geometric examination is placed on the spatial pattern, highlighting the examination of the spatial concept and spatial imagination ability. It not only directly seeks the area of the polyhedron and the rotating body. The volume problem also has the problem of knowing the area or volume for the quantity of certain elements or the positional relationship between the elements. Even if the problem of examining the positional relationship of space lines, it is often based on geometry.