bn:00060576n
Noun Concept
Categories: Elementary shapes, Types of quadrilaterals
EN
parallelogram  Area of a parallelogram  Diags. bisect each other  Diags. of //gram  Opp. angles equal
EN
A quadrilateral whose opposite sides are both parallel and equal in length WordNet 3.0
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EN
A quadrilateral whose opposite sides are both parallel and equal in length WordNet 3.0 & Open English WordNet
In Euclidean geometry, a parallelogram is a simple quadrilateral with two pairs of parallel sides. Wikipedia
Quadrilateral with two pairs of parallel sides Wikidata
A quadrilateral that has two sets of opposite parallel sides. OmegaWiki
A convex quadrilateral in which each pair of opposite edges are parallel and of equal length. Wiktionary
Convex quadrilateral in which each pair of opposite edges are parallel and of equal length. Wiktionary (translation)