A planar quadrangle with equal sides. A rhombus can be considered as a special case of a parallelogram with adjacent sides equal or with diagonals perpendicular to each other or with a diagonal dividing the angle in two. A rhombus with right angles is a square.
|[a1]||K. Rektorys (ed.) , Applicable mathematics , Iliffe (1969) pp. 135|
Rhombus. BSE-3 (originator), Encyclopedia of Mathematics. URL: http://encyclopediaofmath.org/index.php?title=Rhombus&oldid=14428