用空间向置解决立体几何问题,使几何问题代数化,把空间中的“定性”研究化归为代数的“定量”分析,从而使求解目标程序化、算法化,有利于学生克服空间想象能力的障碍,降低了立体几何的难度,尤其在处理平行、垂直、夹角、距离等问题时,更显优势。 Solve the three-dimensional geometric problem with spatial orientation, make the geometric problem algebraic, and classify the “qualitative” research in space as the “quantitative” analysis of algebra, so that the solution target is programmed and algorithmized, which is beneficial for the students to overcome the spatial imagination ability. The obstacles reduce the difficulty of three-dimensional geometry, especially when dealing with parallel, vertical, angle, distance and other issues.