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问题空间四点中,如果任意三点都不共线,那么经过其中三点的平面().A·必定有4个B·4个或1个C·3个或1个D·1个观点14点不共面时有4个;4点共面时,把经过了其中4点也认为符合“经过其中三点”,有一个.答案为B.观点24点不共面时有4个;4点共面时,由于该平面经过了其中4点,而不是“
Of the four questions in the problem space, if any three points are not collinear, then the plane passing through three points ().A. must have 4 B. 4 or 1 C. 3 or 1 D. 1 viewpoints. When there are 4 points that are not coplanar, there are 4; when 4 points are coplanar, after passing through 4 of them, it is also considered that “there are three points passing through” and there is one. The answer is B. There are 4 points when the viewpoint is not 24 points; When 4 points are coplanar, because the plane passes 4 of them instead of