For what value of x is quadrilateral CDEF a parallelogram?

Mathematics

1 answer:

kykrilka [37]3 years ago

3 0

Answer:

$x = 4$

Step-by-step explanation:

Since the diagonals of a parallelogram bisects each other, therefore:

$x + 1 = 2x - 3$

Collect like terms

$x - 2x = -1 - 3$

$-x = -4$

Divide both sides by -1

$x = 4$

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