noun
- A quadrilateral whose opposite sides are both parallel and equal in length. .
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). parallelogram. Retrieved September 20, 2026, from http://smartdefine.org/parallelogram/definitions/1325525 |
| Chicago | WordNet. 2010. "parallelogram" http://smartdefine.org/parallelogram/definitions/1325525 (accessed September 20, 2026). |
| Harvard | WordNet 2010, parallelogram, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/parallelogram/definitions/1325525>. |
| MLA | WordNet. "parallelogram" 23 October 2010. Web. 20 September 2026. <http://smartdefine.org/parallelogram/definitions/1325525> |