It is a rhombus. It is the only equilateral parallelogram other than a square, which conversely has all right angles.
A quadrilateral with 4 right angles and opposite sides that are parallel can be either a rectangle if the adjacent sides are of different length or a square if the adjacent sides are of the same length.
The shape you are looking for is a quadrilateral. If you have a square, all angles MUST be right angles. A parallelogram can also have 4 equal sides in length and parallel sides, but a parallelogram doesn't have right angles.
A parallelogram is a geometric quadrilateral with two pairs of parallel sides. The opposite sides and opposite angles are equal in length.
A trapezoid (trapezium) has only 2 sides parallel and not all angles equal
A square would fit the given description
rhombus. The rhombus is a quadrilateral with all sides equal in length. It is also a parallelogram, so opposite sides are parallel and equal in length, and opposite angles are equal.
A square has 3 sets of parallel sides of equal length AND all the angles are 90 degrees. A rhombus has 2 sets of parallel lines of equal length, but the angles aren't all 90 degrees.
A rectangle.
A quadrilateral with 4 right angles and opposite sides that are parallel can be either a rectangle if the adjacent sides are of different length or a square if the adjacent sides are of the same length.
It is a parallelogramIf one of the angles is a right angle (then they all are) and the quadrilateral is a rectangle.If both pairs of sides are equal in length (but none of the angles is a right angle) the quadrilateral is a rhombus.If the sides are equal and one of the angles is a right angle, the quadrilateral is a square.
A parallelogram is a quadrilateral with opposite sides that are parallel and equal in length, and opposite angles that are equal. Two ways to describe a parallelogram could be as a shape with opposite sides that are both parallel and equal in length, or as a shape with opposite angles that are equal.
Rhombus
An isosceles trapezium.
A quadrilateral with four equal sides and parallel sides that are not perpendicular to each other is known as a rhombus. In a rhombus, opposite sides are parallel, and all four sides are of equal length. While the angles are not necessarily right angles, the opposite angles are equal, and adjacent angles are supplementary. This shape maintains its properties regardless of the angles between the sides.
It is a quadrilateral that has 2 parallel sides of different lengths and 2 sides of equal length with base angles being equal
A rhombus. Commonly referred to as a "diamond".
The shape you are describing is a rectangle. A rectangle is a type of quadrilateral that has two pairs of parallel sides, opposite sides that are equal in length, and all interior angles measuring 90 degrees. If all four sides of the rectangle are also equal in length, it is specifically known as a square.