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在现行高一立体几何课本中,谈到空间两条直线的位置关系,其中最难理解和掌握的是异面关系,这也是教学的难点。要作出它们的公垂线就相当困难,而求两异面直线的距离更是如此。这就需要我们另辟途径,通过问题的转化进行求解,当然对一般的两异面直线的距离不易求出,但对一些情况比较特殊的两异面直线的距离,我们还是可以通过
In the current high-dimensional geometry textbooks, the positional relationship between two straight lines in space is discussed. The most difficult to understand and grasp is the relationship between different sides. This is also a difficult teaching point. It is very difficult to make their public vertical lines, and the distance between two different straight lines is even more so. This requires us to open up another way to solve the problem through transformation. Of course, it is not easy to find the distance between two straight lines of the two different planes, but we can still pass the distance between two different straight lines that are special for some situations.