In the figure above, what is the maximum number of nonoverlapping regions into which the shadedarea can be divided using exactly two straight lines? 问题是什么意思啊..看不懂诶...图就是两个一大一小的同心圆,阴影部分是圆环,

问题描述:

In the figure above, what is the maximum number of nonoverlapping regions into which the shaded
area can be divided using exactly two straight lines? 问题是什么意思啊..看不懂诶...图就是两个一大一小的同心圆,阴影部分是圆环,

在上图中,没重叠部分的最大数是什么,没重叠部分(阴影部分)可用两条直线隔开.