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求异面直线的距离历来是立体几何教学的一个难点,为降低难度,教学大纲中明确要求,对于异面直线的距离,只要求会利用给出的公垂线计算距离.因目前立体几何教学执行两种方案.因而学习9(B)方案的学生除了采用
Finding the distance between different straight lines is always a difficult point in the teaching of three-dimensional geometry. To reduce the difficulty, the syllabus clearly requires that for distances of different straight lines, it only requires the use of the given vertical line to calculate the distance. Because of the current three-dimensional geometry teaching Implementing two programs. Students who study the 9(B) program are therefore