quadrilateral
noun
- Geom. a plane figure having four sides and four angles
- a four-sided area
See quadrilateral in American Heritage Dictionary 4
(kwŏdˌrə-lătˈər-əl)
noun Mathematics A polygon having four sides.
adjective Having four sides.
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quadrilateral
top: convex quadrilateral
bottom: non-convex quadrilateral
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