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In trapezoid ABCD, sides AB and CD are parallel, angle A = 2(angle D), and angle C = 8(angle B). Find angle B

 Apr 12, 2022
 #1
avatar+122390 
+1

Since AB and CD are parallel, BC is a transversal making angles B and C  supplementary

 

So

 

B + C  = 180

 

B + 8B  =  180

 

9B  = 180

 

B =  180  / 9    = 20°

 

 

cool cool cool

 Apr 12, 2022
 #2
avatar+122 
-1

Your so Smart

 Apr 12, 2022

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