最近几年的中考中,经常出现这样一种试题,题设中给出一几何图形,其上有一个动点,点在以某一速度沿着某一方向移动,称之为“动点问题”;如果是整个图形以某速度,沿一定的方向移动,这就是“图形的平移”问题.处理这类题目,第一要仔细审题,理解题目的本 In the mid-term exams of recent years, such a test question often appears. In the title assignment, a geometric figure is given. There is a moving point on the title point. The point moves at a certain speed along a certain direction, and it is called a “movement point. The question ”; If the whole figure is moving at a certain speed and in a certain direction, this is the problem of “graphical translation ”. To deal with such problems, the first question is to carefully examine the problem and understand the problem.