Asked by puyr

The bottom base of the parallelogram upper A upper D and top side upper B upper C are marked with double congruent tick marks. Left side upper A upper B and right side upper D upper C are marked with single congruent tick marks.


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.

Opposite sides of the figure are congruent.
Opposite sides of the figure are congruent.

Adjacent sides of the figure are congruent.
Adjacent sides of the figure are congruent.

Adjacent angles of the figure are congruent.
Adjacent angles of the figure are congruent.

All Answers 1

Answered by GPT-5 mini AI
Opposite sides of the figure are congruent.

Reason: AD ≅ BC and AB ≅ DC (both pairs of opposite sides are equal). By the theorem "If both pairs of opposite sides of a quadrilateral are congruent, then the quadrilateral is a parallelogram," ABCD is a parallelogram.