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同三角形一样,四边形也是基本的平面图形,是《数学课程标准》“图形与变换”部分的重要内容,更是中招考试的重要知识点之一.在学习平行四边形、矩形、菱形、正方形的有关性质和判定时,可类比学习三角形时运用的方法,从图形的角、边、对角线等方面进行探究,以得到相关结论.在解决有关四边形的动态探究问题时,仍然可以类比三角形相似问题的探究方法.这样做,既使问题得到了解决,又培养和发展了逻辑思维能力和创新能力.一、类比三角形探究四边形的分类
Like the triangle, the quadrilateral is also a basic plane graph, which is an important part of the “Mathematics Curriculum Standard” and “Graphics and Transform.” It is also one of the important knowledge points in the examination.When learning the parallelogram, rectangle, diamond, Square related to the nature and judgment, can be analogy to learn the method used in the triangle, from the graphics angle, edge, diagonal, etc. to explore the relevant conclusions in the resolution of the quadrangle dynamic inquiry problem, you can still analogy Triangular similarity problem of inquiry method .To do so, even if the problem has been solved, but also cultivate and develop the logical thinking ability and innovation ability .A, analogy triangle to explore the classification of quadrilateral