# Anti-parallelogram

From Encyclopedia of Mathematics

A plane quadrangle in which each pair of opposite sides is equal and anti-parallel to the other two sides (cf. Anti-parallel straight lines).

**How to Cite This Entry:**

Anti-parallelogram.

*Encyclopedia of Mathematics.*URL: http://www.encyclopediaofmath.org/index.php?title=Anti-parallelogram&oldid=32112

This article was adapted from an original article by A.B. Ivanov (originator), which appeared in Encyclopedia of Mathematics - ISBN 1402006098. See original article