两点的距离、点到直线的距离、两条平行线的距离是初中几何的三个重要概念,这几个概念在理解、作图、计算时容易混淆,学习时应加以区分.一、意义与图示1.两点的距离是指连结两点的线段的长度.注意:两点的距离是线段的长度而不是线 The distance between two points, the distance from the point to the straight line, and the distance between two parallel lines are three important concepts of the junior high school geometry. These concepts are easily confused when they are understood, plotted, or calculated. They should be distinguished when learning. And the figure 1. The distance between two points refers to the length of the line connecting two points. Note: The distance between two points is the length of the line, not the line