none exist.
It is a square
it is a rhombus
In all parallelograms, opposite angles and opposite sides are congruent. If all four sides are congruent, it's a rhombus. If all four angles are congruent, it's a rectangle. If all four sides and all four angles are congruent, it's a square.
A square or a rectangle perhaps?
Angles and sides are congruent when they are identical. A shape with four identical sides and angles is a square.
none exist.
a regular polygon
A square, because congruent means equal.
trapezoid
Rhombus.
A shape that has four straight sides and four angles is defined as a quadrilateral. If all four angles are right angles, it is a rectangle, and if all four sides are congruent, it is a square.
It is a square
it is a rhombus
A Rectangle
In all parallelograms, opposite angles and opposite sides are congruent. If all four sides are congruent, it's a rhombus. If all four angles are congruent, it's a rectangle. If all four sides and all four angles are congruent, it's a square.
A square or a rectangle perhaps?