A rectangle has four sides with two equal lengths.
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.
It is a rhombus
A shape with four sides where no side is equal in length is called a trapezoid (or trapezium in some regions). This quadrilateral has at least one pair of parallel sides, while the other two sides can be of different lengths. The sides can vary significantly, leading to a variety of trapezoidal shapes.
A shape that has four sides but does not have all sides the same is a rectangle. In a rectangle, opposite sides are equal in length, but the adjacent sides can be of different lengths. This distinguishes it from a square, which has all four sides equal. Other examples include trapezoids and irregular quadrilaterals.
square
The shape you are describing is a trapezoid (or trapezium in some regions). Specifically, it is an isosceles trapezoid, where the two non-parallel sides are equal in length while the two parallel sides are of different lengths. This configuration creates a trapezoid with the specified characteristics.
Rectangle
A square is defined as a quadrilateral with four equal sides and four right angles. Each of its sides is of equal length, ensuring that the shape is both symmetrical and balanced. The four vertices are the points where the sides meet, forming the corners of the square. This unique combination of equal lengths and right angles gives the square its distinctive properties.
A rhombus is a shape having two acute angles and four equal sides.
There are no specific names for such a shape.
It's the sum of the various individual lengths of the four sides.
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.