Answer:16
Step-by-step explanation:
 
        
             
        
        
        
Answer:
b
Step-by-step explanation:
it can be 20 ft that is what l think
 
        
             
        
        
        
Answer:
Triangle.
Step-by-step explanation:
 
        
             
        
        
        
To find the sum, add. To find the difference, subtract. It's simple terminology in mathematics. Hope I helped!
        
             
        
        
        
Answer:
Step-by-step explanation:
1.  AB||DC and AB = CD             Given
2.  ∠1 = ∠4                                 If lines are parallel, then alternate interior
                                                   angles are equal.
3 .AC = AC                                 Reflexive
4. ΔABC ≅ ΔCDA                      SAS
5.  ∠2 = ∠3                                CPCTE