建立空间直角坐标系解立体几何(下简称立几)题,是新课标理科学生必须掌握的,即使是文科,大多也介绍了此法.大凡有点质量的立几题,常会在点的坐标寻找上遇到不同程度的障碍,大多数情况 The establishment of space Cartesian coordinate system to solve three-dimensional geometry (hereinafter referred to as set a few), is a new curriculum science students must master, even liberal arts, most also introduced this method.Generally a bit of quality set a few questions, often at the point coordinates Seek to encounter different levels of obstacles, in most cases