异面直线上两点间的距离公式□梁家祥高晓荣我们知道，不在同一平面上的两条直线叫异面直线。如图（１）所示，直线ａ与直线ｂ是异面直线。如果直线ａ与ｂ是异面直线，经过空间任意一点０作直线ａ’∥ａ，ｂ’∥ｂ，那么ａ’，ｂ’是同一平面上的两条直线，交点为０，我们... Distance formula between two points on a straight line □ Liang Jiaxiang Gao Xiaorong We know that two straight lines that are not on the same plane are called different straight lines. As shown in (1), the straight line a and the straight line b are straight lines. If the straight lines a and b are straight lines that pass through any point of space 0 as straight lines a’∥a, b’∥b, then a’, b’ are two straight lines on the same plane, and the intersection point is 0, we...