Answer:
-10 x-13
Step-by-step explanation:
it is what is iss
135°
In a parallelogram the opposite angles are congruent, so
∠BCD = ∠BAD = 135°
21*x=9*21
9*21=189
21*x=189
Divide 189 by 21 to solve for X or in this case "Blank"
189/21= 9
