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立体几何是平面几何的拓展与延伸,从平面到空间,由二维到三维,这是中学数学的一个重要转折,也是数学思维的一次质的飞跃.立体几何与平面几何之间有着非常紧密的联系,同学们在学习的过程中,应注意图形各自的特点,熟练掌握平面图形与空间图形相互转换的途径与方法,认真领悟空间问题平面化的思维方式,是学好立体几何的有效手段.下面举例分析通过平面图形与立体图形相互转换,达到快速求解的实例,相信对提高同学们的思维能力和解题技巧会有所帮助.
Three-dimensional geometry is the expansion and extension of plane geometry, from plane to space, from two-dimensional to three-dimensional, which is an important turning point in mathematics in middle school, but also a qualitative leap in mathematical thinking .Solid geometry and plane geometry has a very close Contact, students in the learning process, we should pay attention to the characteristics of the graphics, proficiency in the plane graphics and spatial graphics of the ways and means of conversion, a serious comprehension of space plane thinking of thinking is an effective means of learning three-dimensional geometry. Example Analysis Through the plane graphics and three-dimensional graphics conversion, to achieve rapid solution of examples, I believe to improve their thinking skills and problem-solving skills will be helpful.