Answer:
where is the diagram for the question?
 
        
             
        
        
        
I need a picture of the figures to help with this!
        
                    
             
        
        
        
To form a linear pair means that when added, they equal 180 degrees.
but if they have equal measures....180/2 = 90...then they would both equal 90 degrees.....and 90 degrees is a right angle. 
So ABC and CBD are both right angles
        
                    
             
        
        
        
Answer:
1/4, 1/8, 1/16 
i don't know this is my guess but these are small and close to zero