First you would need to add up all of the data given, then divide the sum by 9 because there is 9 pieces of data. So it would be 229/9=25.4444444 repeating. 
        
                    
             
        
        
        
Answer:
D
Step-by-step explanation:
The angle CDG equals 90 degrees and the angle GDE also equals 90 degrees. Supplementary angles are angles that add up to be 180 degrees.
CDG + GDE = 180 degrees
 
        
             
        
        
        
Answer:
BC equals 5
Step-by-step explanation:
they are parallel to each other making them equal sides
 
        
             
        
        
        
Answer:
-7
Step-by-step explanation:
7-3=4