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平面直角坐标系中的图形运动问题是历年各地中考命题关注的重点.这类问题可分为两种基本类型:一是图形的整体运动,如平移、旋转、翻折;二是图形中的某些元素运动,如动点在图形中沿线运动,直线或线段相对于某图形运动等.这两类问题在各地中考试卷中一般至少要有一道题,甚至是分值比较高的压轴题.本文通过2005年中考试题分析其基本特点和解法,供学习参考.
The problem of graphic movement in the plane rectangular coordinate system is the focus of the propositions in the various examinations over the years. This type of problem can be divided into two basic types: one is the overall movement of the graphic, such as translation, rotation, and flip; the second is the movement of certain elements in the graphic, such as the movement of the moving point along the line in the figure, and the straight line or line segment relative to A graphic movement. These two types of questions generally have at least one question in the local examination papers, and even a relatively high final score question. This article analyzes its basic features and solutions through the 2005 exam questions for reference.