Prove that quadrilateral ABCD is a parallelogram. How do you know that the figure is a parallelogram? (1 point) Responses Adjacent sides of the figure are parallel. Adjacent sides of the figure are parallel. Adjacent angles of the figure are congruent. Adjacent angles of the figure are congruent. Adjacent sides of the figure are congruent. Adjacent sides of the figure are congruent. Opposite sides of the figure are congruent.
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To prove that quadrilateral ABCD is a parallelogram, we can use the property of opposite sides being congruent. Therefore, the correct response is:
Opposite sides of the figure are congruent.
This is a valid criterion for identifying a parallelogram, as one of the key properties of parallelograms is that both pairs of opposite sides must be equal in length.
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