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动点几何问题一直是中考的热点,也一直是学生学习几何的一大难点.如何帮助学生掌握此类问题的特点,建立动态几何的空间观念,并找到解决此类问题的方法,培养学生观察、分析和解决问题的能力,一直是我们教学中急需突破和解决的一大难题。下面,我就几何综合题多边形中动点问题做一点探讨.一、从动态的图形中找出不变的量和关系如图员,在Rt吟A BC中,A B越A C,P是边A B(含端点)上的动
Moving point geometric problem has always been a hot spot in the exam, but also has been a major difficulty for students to learn geometry.How to help students grasp the characteristics of such problems, the establishment of spatial geometry of the concept of space, and to find ways to solve such problems, training students to observe The ability to analyze and solve problems has always been a major challenge that we need to break through and solve in our teaching. In the following, I will do a little discussion on the moving point of the polygons of geometric synthesis problem. First, find out the invariable quantity and the relation from the dynamic graph. For example, in Rt Yin A BC, AB is more AC, P is edge AB (Including the end point) on the move