立体几何主要研究空间中点、线、面之间的位置关系,近几年全国各省市的高考题中与空间图形有关的线段、角、距离、面积、体积等最值问题常常在高考试题中出现,并且成增长趋势,其中建立函数模型是求最值问题的常见方法,下面举例说明解决这类问题的常用函 The main study of the three-dimensional geometry of the space point, line, the relationship between the location in recent years, the provinces and cities nationwide entrance examination questions and space graphics related to the line, angle, distance, area, size and other value problems often in the entrance examination questions Appear and grow into a trend of growth. The establishment of a functional model is a common way to find the most value problem. Here are some examples of commonly used solutions to such problems