近年中考中频频出现的求阴影面积问题,主要考查学生的观察能力,图形变换能力和综合运用知识的能力.多数情况下,我们遇到的阴影图形为不规则图形,通常由三角形、四边形、圆、扇形和弓形等基本图形组合而成的.在解此类问题时,要注意观察和分析图形,会进行图形的分解与组合.现介绍几种常用的 In recent years, the shadow area problem frequently appeared in the middle school entrance examination, mainly to examine the students’ observation ability, the ability to transform graphics and the ability to comprehensively use knowledge. In most cases, the shadow graphics we encounter are irregular graphics, usually triangular, quadrangular, round The combination of basic graphics such as fan, fan, and bow. When solving such problems, we must pay attention to the observation and analysis of graphics. We will perform decomposition and combination of graphics. Now introduce several common