Answer:
Regarding the anatomy of an arch, what is the springing line? The springing line is an imaginary line between where the curves of the arch begin on each side
 
        
             
        
        
        
Answer: speed and  velocity
 
        
                    
             
        
        
        
B. Rose Window
Gothic pieces can be identified easily with rose windows as well as pointed/onion-shaped archways.
Happy Studying ;)