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立体几何的距离问题是一个重要的内容,新教材比老教材要丰富得多,也科学得多.在没有空间直角坐标系或空间直角坐标系建立很困难的情况下,我们要想到本文中的三个距离模型,它们是异面直
The distance problem of three-dimensional geometry is an important content. The new textbook is much richer and more scientific than the old textbook. In the absence of a space rectangular coordinate system or the establishment of a space rectangular coordinate system, we must think of the Three distance models, they are different face straight