立体几何主要的内容是研究点、线、面的位置关系以及角度和长度的求解,高考题目也是围绕着这个主题进行,其中二面角属于难点内容,而解决这类问题的方法不外乎传统方法与坐标结合向量这两大类方法,那么灵活使用这两类方法就是处理二面角问题的有效途径。 The main content of the three-dimensional geometry is the research point, line, surface location and the relationship between the angle and length of the solution, the subject is also around the college entrance examination topics, which are difficult to dihedral angle content, and the solution to such problems is nothing more than traditional Method and coordinate combination of these two categories of methods, then the flexibility to use these two types of methods is an effective way to deal with the dihedral problem.