数出图内有多少四边形?(这种题有窍门吗?)图是横竖各四条线相交,组成九个小四边形
2个回答

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

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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)