+0  
 
+1
674
2
avatar+2498 

                                  

 Jan 19, 2016

Best Answer 

 #1
avatar+33661 
+10

As shown the internal angle is 160, so the external angle is 20. If there are n trapezoids then: 

 

20n = 360

 

so n = 18

 Jan 19, 2016
 #1
avatar+33661 
+10
Best Answer

As shown the internal angle is 160, so the external angle is 20. If there are n trapezoids then: 

 

20n = 360

 

so n = 18

Alan Jan 19, 2016
 #2
avatar+2498 
+5

Thanks Alan ! 

 Jan 19, 2016

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