Answer:
x = 30
Step-by-step explanation:
In a parallelogram, opposite angles are CONGRUENT (they are equal).
If we draw a parallelogram ABCD, we will see that:
Given B = 60 and D = 2x >>> we also know they are Equal. So we can say:
B = D
60 = 2x
Now we solve for x:
2x = 60
x = 60/2
x = 30
