Please provide details such as the word problem and options. 
        
                    
             
        
        
        
Check the picture below.
doesn't that make it just a 20 x 14?  well, surely you know what that area is.
 
        
        
        
Answer:

Hope this helped. A brainliest would be very much appreciated. (I need 4 brainliest so I can level up) :)
 
        
                    
             
        
        
        
Bonjour!
For A, the two angles are congruent by the Corresponding Angles are Congruent Theorem/Postulate.
For B, the two angles are congruent by the Vertical Angels are Congruent Theorem/Postulate.
As for C, the two angles are congruent by the Same Side Exterior Theorem/Postulate.(Though I am uncertain if that is the correct name for this one)
Hope that helps :)