但如果横竖四线间距一样(就有9个小正方形
9(正方形)+4(四个一组正方形)+6(长方形)+2(两行一组长方形)+1(总体大的)
=22
··········································方·····························法································是······························
先找正方形 再找组合正方形
再找长方形 再找组合长方形
(再找菱形、梯形、平行四边形的不规则四边形)