It could be a hexagon which is stretched out so that one pair of opposite angles become acute - but they must be different otherwise you will have three pairs of parallel sides.
Congruent.
A parallelogram is a quadrilateral with opposite sides parallel and congruent.
A parallelogram or a rhombus
It could be a hexagon which is stretched out so that one pair of opposite angles become acute - but they must be different otherwise you will have three pairs of parallel sides.
A rhombus (pushed over square) will give you 2 pairs of parallel, congruent sides, 2 acute angles and 2 obtuse angles.
In general a rhombus has one opposite pair of congruent acute angles and one opposite pair of congruent obtuse angles. A square, however, is a rhombus with four right angles.
Parellelogram
Its sides are congruent but not its angles because it has 2 equal opposite acute angles and 2 equal opposite obtuse angles.
NOImproved Answer:-Yes a rhombus has equal opposite acute angles and equal opposite obtuse angles
A parallelogram has 2 equal opposite acute angles and 2 equal opposite obtuse angles.
It is a rhombus that fits the given description.
No, but the opposite angles are congruent because it has 2 equal opposite acute angle and 2 equal opposite obtuse angles that all add up to 360 degrees.