A Square!
rhombus
A parallelogram, a rhombus, a square and a rectangle
a rectangle
Rectangle
-- Opposite sides are parallel.-- Opposite sides are equal.-- Angles are all equal.
A polygon with four sides that has equal opposite sides parallel and four equal angles is called a rectangle. In a rectangle, opposite sides are both equal in length and parallel, while each of the four angles measures 90 degrees. If all four sides are also equal in length, the rectangle becomes a square.
The quadrilateral described is a rectangle. In a rectangle, opposite sides are equal and parallel, and all four angles are right angles. This definition meets the criteria of having one pair of opposite sides that are equal and parallel, along with the presence of right angles.
That would be a square.
It is a square or a rectangle
It is a square or a rectangle
A square or maybe a rectangle as well would fit the given description
A square is rectangle with all its sides are equal in length. The rectangle has: (a) opposites sides are parallel. (b) opposite angles are equal