A parallelogram is a shape with four sides, it's easy to consider the special case when all sides are equal length, and all angles in a parallelogram add up to 360 degrees, and the angles occur in pairs. So a parallelogram with sides equal to s, and angles 89,91,89,91 will have four sides of equal length and no right angles-- it will look very much like a square though as the difference in the angles is only 1 degree.
a diamond will also work as long as its taller than it is fat, or fatter than it is tall A rhombus is an equal-sided parallelogram.
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A square
i have a feeling its a rhombus
rectangle
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.Types of parallelogram:Rhomboid - A quadrilateral whose opposite sides are parallel and adjacent sides are unequal, and whose angles are not right anglesRectangle - A parallelogram with four angles of equal sizeRhombus - A parallelogram with four sides of equal length.Square - A parallelogram with four sides of equal length and four angles of equal size (right angles).