进行空间想象和思维与作好立体几何直观图形是密切联系、相辅相成的.只有先想象出空间位置关系或度量关系,才有可能据此作出较好的立体几何直观图;反之,作出一个好的立体几何直观图,又能进一步帮助我们更好地进行空间想象和思维,促进解题。怎样才能作好立体图形呢? The spatial imagination and thinking are closely related to and complementary to the stereographic geometric visualization. Only by first imagining the spatial position relationship or the metric relationship, can it be possible to make a better stereographic intuitive map; on the contrary, to make a good one. The intuitive geometry of the three-dimensional geometry can further help us better imagine and think about space and promote problem solving. How can stereoscopic graphics be made?