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立体几何是平面几何的延伸和拓展,从平面到空间,从二维到三维,是中学数学的一个重要转折,也是数学思维中的一个飞跃。立体几何与平面几何有着密切的联系,学习中注意图形间各自的特点,熟练掌握平面图形和空间图形相互转换的途径和方法,认真领悟空间问题平面化的思维方式,是构建几何的知识网络,学好立体几何的有效手段。
Three-dimensional geometry is the extension and extension of plane geometry. From plane to space, from two-dimensional to three-dimensional, it is an important turning point in middle school mathematics and a leap in mathematical thinking. The three-dimensional geometry is closely related to the plane geometry. In the course of learning, attention is paid to the respective characteristics of the graphs, and the ways and methods of mutual transformation between plane graphs and spatial graphs are mastered, and the way of thinking for the planarization of space problems is conscientiously understood. This is a knowledge network for constructing geometry. Learn effective methods of solid geometry.