论文部分内容阅读
异面直线所成的角是指过空间任一点O所作分别与二异面直线平行的二直线所成的锐角(或直角)．因此空间一点“O”的选取便成了解决此类问题的关键．思想过程一从特殊情形出发,我们希望点“O”取
The angle formed by the different surface straight lines refers to the acute angle (or right angle) formed by the two straight lines parallel to the two different surface straight lines at any point O of the over space. Therefore, the choice of space “O” is the key to solve this kind of problem. The thought process begins with a special situation. We hope to take the point “O”.