中考题中除了有动点的旋转运动问题,有时还会出现动线段旋转的问题.由于线段是由其端点所确定的,所以只要搞清线段的两个端点的运动情况,求出它们的运动轨迹,线段内的点的运动也就清楚了,这样就能进 In addition to the examination questions in the rotation problem of moving point, and sometimes there will be moving line segment rotation problem.As the line segment is determined by its endpoint, so as long as the line segment of the two ends of the movement, find their movement Trajectory, the movement of points within the line will be clear, so you can enter