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A, O and B lie on a straight line segment where a = 61°, b = 20° and c = 39°. 

State the value of the angles: 
i) ∠AOB 
ii) ∠ZOB 
iii) ∠XOY 
iv) ∠AOY 
v) ∠YOZ
 

Guest Jun 18, 2017
 #1
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AOB  = 180°

ZOB  = c   = 39°

XOY  = b = 20°

AOY  =  a + b  = 61 + 20  =  81°

YOZ  = 180 - a - b - c  =  180  - 61 - 20 - 39  = 60°

 

 

cool cool cool

CPhill  Jun 18, 2017

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