+0  
 
0
140
1
avatar+177 

Geometry

party.girl286  Jan 24, 2018
 #1
avatar+86889 
+3

"a" is an alternate interior angle  to the angle measuring 36°....so  that is its measure

 

By the Exterior Angle Theorem, "c"  =  139 - 77  =  62°

 

We can stop here....there is only one answer where a = 36  and c  = 62

 

 

cool cool cool

CPhill  Jan 24, 2018

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