It could be an irregular polygon with 6 or more sides or, if a quadrilateral, it could be a parallelogram.
A square
a square is the answer.
a parallelogram.
trapizoid
an isosceles triangle
A quadrilateral with congruent pairs of adjacent sides and no parallel sides is a kite.
A square. A rectangle.
SQUARE!!
a square or rhombus
A parallelogram has two pairs of congruent sides.
It is a square
it is a square