A rhombus is a special case of a parallelogram, because it fulfills the requirements of a parallelogram: a quadrilateral with two pairs of parallel sides. It goes above and beyond that to also have four equal-length sides, but it is still a type of parallelogram.

Is a rhombus a parallelogram yes or no?

The Parallelogram

A parallelogram has opposite sides parallel and equal in length. Also opposite angles are equal (angles "A" are the same, and angles "B" are the same). NOTE: Squares, Rectangles and Rhombuses are all Parallelograms!

Why is a rhombus not a parallelogram?

Summary: In a parallelogram, the opposite sides are equal whereas in a rhombus all four sides are equal. In a parallelogram, the diagonals bisect each other whereas in a rhombus they do not bisect each other. ... It is not so in the case of a parallelogram.