A square is one type of rhomboid that meets the criteria of four equal sides. If the angles are not all equal there are many diamon shaped figures which meet the criteria.
Rectangle
Square
a quadrilateral
A QUADRILATERAL has four corners and four sides, along with four angles. These do not need to be congruent (equal) but they can be.
a quadrilateral
square
A parallelogram is a four sided shape where opposite sides are parallel and equal lengths. If you mean that ALL sides are equal lengths, you are looking for a rhombus.
A rhombus is a shape having two acute angles and four equal sides.
A rectangle has four sides with two equal lengths.
Rectangle
A "parallelogram" technically is a shape where opposite sides are equal and any shape with four sides is a "quadrilateral". Every square has four sides of equal length, so a square is both a parallelogram and a quadrilateral. A rhombus(or diamond shape) can have four sides of equal length and can be a parallelogram as well, so either are possibilities.
A square is a two-dimensional shape with four equal sides and four right angles.
The rectangle
No shape has four equal sides and four different angles - either there are two pairs of equal angles, or all four angles are the same; or all sides are not the same length.
There is no such shape. If the four sides are equal it MUST be a parallelogram.
You are a square
A geometric shape with four sides, where all four sides are of an equal length.