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下面各图都是用全等的等边三角形拼成的一组图形,第①个图形中有1个等腰梯形,第②个...
下面各图都是用全等的等边三角形拼成的一组图形,第①个图形中有1个等腰梯形,第②个图形中有4个等腰梯形,…依此类推,则第6个图形中有( )个等腰梯形.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101192730947458606/SYS201311011927309474586009_ST/images0.png)
A.16
B.26
C.36
D.56
考点分析:
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