求几何图形阴影部分的面积是中考中的热点,它注重考查了对图形的观察能力和感知体验能力.此类问题的特点是题目中的数量关系不明显或阴影图形不直观、不规则,从而给解题带来困难,让解题者心理蒙上阴影产生畏难情绪.解决此类问题的思想方法是挖掘题目中的隐含条件关系,将不规则图形转化成规则图形直接或间接求解. The area of ​​the shaded part of the geometric figure is a hot spot in the middle of the exam. It focuses on the observation ability and perceived experience of the figure. The characteristics of such problems are that the quantity relationship in the title is not obvious or the shaded figure is not intuitive and irregular. It is difficult to solve the problem, so that the problem solver’s mind is overshadowed by the fear of difficulty. The way to solve this problem is to find out the implicit conditions in the problem, and convert the irregular graphics into regular patterns directly or indirectly.