A square
if you think about what you just wrote you will find something interesting by defining a shape by this definition.
A rhombus.
You are incorrect!!! A SQUARE is a 2-dimensional shape ( tetragon) All four sides are of equal length. The opposite sides are parallel All four angles = 90 degrees. NB There are many other tetragons viz. Rhombus, Rectangle, Parallelogram, Kite, Trapezium, and irrgular quadrilateral.
It could be a trapezoid having 2 right angles, an obtuse angle and an acute angle
If the shape (a quadrilateral) has only 2 parallel sides, it is a trapezoid (UK trapezium).A shape with four sides and two sets of parallel sides is a parallelogram (rectangle, square, rhomboid, rhombus) because these figures have four sides and two sets of parallel sides.
Square
Cube
parallelogram
It can be a square or a rectangle
Any shape that is not a triangle may have 2 parallel sides, although regular polygons only have parallel sides when the number of sides is even. For a quadrilateral, a trapezoid(UK trapezium) has 1 set of parallel sides and a parallelogram (either a rhombus, rectangle, or square) has 2 sets of parallel sides.
A diamond has 2 sets of parallel sides.
No. A parallelogram has two sets of parallel sides.
A square
Quadrilaterals with two sets of parallel sides are parallelograms. Parallograms include squares, rectangles, and rhombi (rhombuses).
A Parallelogram (Examples: Rectangle, square,etc.)
The description given fits that of a rhombus.