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在中考数学中我们经常会遇到求阴影部分的面积的题目,它们的形状多数不规则,这时就会用到等积变形,下面是等积变形的几种常用策略.
In the mathematics of high school entrance examination, we often encounter the problem of finding the area of the shadow part. Most of their shapes are irregular. At this time, we will use the equal-area deformation. The following are some common strategies for equal-area deformation.