concave polygon 1
noundomain: shape
Princeton WordNet [ver.3.1]
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EnglishDefinition
a polygon such that there is a straight line that cuts it in four or more points
Hypernym
polygon 1
noun
a closed plane figure bounded by straight sides
EnglishAntonym
convex polygon 1
noun
a polygon such that no side extended cuts any other side or vertex; it can be cut by a straight line in at most two points
Hyponym
a polygon with one or more reentrant angles
