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1 引言空间问题一直是一个较为复杂和抽象的问题。长期以来人们都是按空间几何元素的位置建立数学模型,或是用投影原理投影为平面图形,在平面上进行研究、计算的方法来想像和描述空间几何元素的位置。这就需要较强的空间想像能力和较高的数学修养,因此使空间问题的认识和研究带来一定的困难。为找出一个既能直接显示空间几何元素位置、又能显示确定其位置的数的形数结合的方法,作者研究设计了“空间几何元素位
1 Introduction Space has always been a more complex and abstract issue. For a long time, people set up mathematical models according to the position of spatial geometric elements, or projected them into plane graphic using projection principle. They studied and calculated on the plane to imagine and describe the position of spatial geometric elements. This requires strong spatial imagination and high mathematics training, thus making the understanding and study of space problems bring some difficulties. In order to find out a method that can not only directly display the position of geometric elements in space but also display the number of shapes that determine their position, the author has studied the design of "Spatial Geometric Elements