# plane figure

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Noun | 1. | plane figure - a two-dimensional shape figure - a combination of points and lines and planes that form a visible palpable shape heart - a plane figure with rounded sides curving inward at the top and intersecting at the bottom; conventionally used on playing cards and valentines; "he drew a heart and called it a valentine" polygon, polygonal shape - a closed plane figure bounded by straight sides conic, conic section - (geometry) a curve generated by the intersection of a plane and a circular cone oblong - a plane figure that deviates from a square or circle due to elongation hemicycle, semicircle - a plane figure with the shape of half a circle sector - a plane figure bounded by two radii and the included arc of a circle star - a plane figure with 5 or more points; often used as an emblem paraboloid - a surface having parabolic sections parallel to a single coordinate axis and elliptic sections perpendicular to that axis ellipsoid - a surface whose plane sections are all ellipses or circles; "the Earth is an ellipsoid" tree diagram, tree - a figure that branches from a single root; "genealogical tree" |

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