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1 总体说明立体几何中的点、线、面及其位置关系是立体几何中的重要内容,空间图形就是由这几个元素构成的,而空间的角与距离是最基本的两个几何量,空间
1 The overall description of the points, lines, surfaces and their positional relationship in the three-dimensional geometry is an important part of the three-dimensional geometry. The spatial pattern is composed of these elements, and the space’s angle and distance are the most basic two geometric quantities. space