论文部分内容阅读
各地的中考数学试题中,最后一道压轴题以代数和几何的综合性问题最为常见,而非动点坐标系图形探究问题,更是近年的重点与难点,这类问题往往自成一系,解法有规律可循.非动点坐标系图形探究问题,是指以坐标系中的特殊图形如特殊三角形、特殊四边形、相似图形或特殊直线等为探究对象,以初中代数和几何难点内容相结合为背景,以数形结合为研究方法的题型.通过图形之间的特殊位置关系和一些特殊的值,建立方程或函数模型去求解,是解决这类问题的关键.
In the middle school entrance examination math test questions, the final one is the most common problem of algebra and geometry, while the problem of non-fixed point coordinate system drawing is more important and difficult in recent years. There are rules to follow.A fixed point coordinate system graphics to explore the problem, refers to the coordinate system of special graphics such as special triangles, special quadrilaterals, similar graphics or special lines as the object of study, the junior high school algebra and geometric difficulties content combination of Background, combined with the number of forms for the study of the type of problem.Through the special position between the graphics and some special values, to establish equations or function models to solve, is the key to solve this type of problem.