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12. Find the values of x and y.

 Dec 7, 2017
 #1
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AB  =   AC   .....so  .....angles  ABD  = ACD

 

So....we have that

 

47 + 47 + 2y  =  180

 

94 + 2y  = 180       subtract 94 from both sides

 

2y  =  86      divide both sides by 2

 

y  = 43°

 

And

 

47 + x + y  = 180

 

47 + x +  43  = 180

 

90 + x  = 180      subtract 90 from both sides

 

x  = 90°

 

 

cool cool cool

 Dec 7, 2017

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