Answer:
6,-6
Step-by-step explanation:
 
        
             
        
        
        
Answer:
Triangle 1 line segment AB and triangle 2 line segment BA correspond to each other 
Step-by-step explanation:
Point b and point a don't correspond to anything else 
triangle 1 and 2 are congruent my answer would be a 50/50 guess between C and D If it were me id risk it and go D but it is up to you.
 
        
             
        
        
        
Answer:
Approximantly 20
Step-by-step explanation:
Circumference = pi times diameter
63/pi = diameter 
Answer: 20.0535228