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Dec 4, 2017
 #1
avatar+9481 
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Here we found that...

 

the second base  =  2 + 1 + 1  =  4

 

so the perimeter  =  2 + 2 + 2 + 4   =   10

Dec 4, 2017
 #1
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Dec 4, 2017
 #1
avatar+37158 
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Dec 4, 2017
Dec 3, 2017

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