A rhombus is just a quadrilateral with equal length. It does not mean that the angles of the 4 sides have to be the same. However, a rhombus is not a square as that means that all rhombuses are squares. Squares are quadrilaterals with 90 degrees on each of its four sides. Rhombuses have different angles that do not for 90 degrees. They however, can have any random angle as long as all the angles equal to 360 degrees. A square can be a rhombus as its angles equal to 360 degrees, and its sides are of equal length.