A) The experimental probability is 1/1 = 1
b) The experimental probability is 2/6 = 1/3
c) The experimental probability is 4/12 = 1/3
d) The theoretical probability is 1/6
        
             
        
        
        
The answer is 45 because a object with 4 sides is equal to 360 degrees. If 45 is x you would add them together as 45+45+135+135=360
        
             
        
        
        
        
<span>An exterior angle of a triangle is equal to the sum of the opposite interior 
angles  </span>⇒  x = 30 + 90 = 120°