True or false: all parallelograms have two pairs of congruent angles.

Answer 1

Probably false

Definition of a parallelogram is 2 opposite sides are equal. That means 2 opposite angles are also equal.

But the question seems to ask if "all" parallelgrams have congruent angles.

a square is a parallelogram which does not have congruent angles with non-square, non rectangle parallelograms.