A rhombus is a parallelogram with all sides equal in length. A rhombus with all angles equal is called a square. The word rhombus comes from the Greek word rhombos, meaning "spinning top". A rhombus is sometimes called a diamond, but not all rhombi are diamond shaped. To find the perimeter of a rhombus, just add up all the sides.
References[change | change source]
- "Online Etymology Dictionary". etymonline.com. http://www.etymonline.com/index.php?search=rhombus&searchmode=none. Retrieved 10 January 2011.