Find the value of x for which ABCD must be a parallelogram
a. 7
b. 2
c. 1
d. 4
2 answers:
Step-by-step explanation:
x+3=2x-1
x-2x=-1-3
-x=-4
x=4
The answer is 4 because a parallelogram have 4 slanted sides in different sizes
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