Final answer:
The quadrilateral DEFG is not a parallelogram.
Step-by-step explanation:
The slopes of the sides of quadrilateral DEFG are 14, -35, 14, and 12.
To determine if DEFG is a parallelogram, we need to check if opposite sides have the same slope.
Since the slopes of the opposite sides are 14 and -35, which are not equal, we can conclude that the quadrilateral DEFG is not a parallelogram.
Therefore, the answer is False.