Help I will give brainiest
       
      
                
     
    
    
    
    
    1 answer:
            
              
              
                
                
Step-by-step explanation:
b + 81° = 117° { exterior angle of a triangle is equal to the sum of two opposite interior angles }
b = 117° - 81°
b = 36°
for no. 14 
The angles that are congruent to < 1 are < 4 and < 8. 
 
                                
             
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Answer:
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Step-by-step explanation:
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−15.82x + 20.042 
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Answer:
Step-by-step explanation: