False. In a parallelogram, both opposite sides and opposite angles are congruent.
How to determine the true statement
From the question, we have the following parameters that can be used in our computation:
In a parallelogram, opposite sides are congruent but opposite angles are not congruent.
A parallelogram is a quadrilateral with opposite sides that are both parallel and equal in length.
This means that opposite sides are congruent.
Also, the opposite angles in a parallelogram are also congruent.
This is as a result of the parallel sides, and it can be proven through the use of angles formed by parallel lines cut by a transversal.
Hence, in a parallelogram, opposite sides are congruent, and opposite angles are also congruent.