If two angles are supplementary, their sum equals 180 degrees
        
             
        
        
        
The answer is 90
to find the median of a number is to just find the middle number if you were to put them in order from least to highest
also, there are mean, median, mode calculators that u can use online
        
                    
             
        
        
        
Hey, I would be glad to help if i knew what the figure looked like ~