## rhombusA quadrilateral in which both pairs of opposite sides are parallel and all sides are the same length, that is, an equilateral parallelogram. A rhombus is also sometimes called a rhomb or a diamond. A rhombus
whose acute angles are 45° is called a lozenge. The diagonals
p and q of a rhombus are perpendicular and satisfy the relationship
p_{2} + q_{2} = 4a^{2}. The
area of a rhombus is given by A = ½ pq.## Related category• POLYGONS | |||||

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