Polygon definition

pŏlē-gŏn
Frequency:
A closed plane figure bounded by three or more line segments.
noun
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A closed plane figure consisting of straight lines.
noun
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The definition of a polygon is a geometric figure with straight sides and angles.

An example of a polygon is a octagon, a figure with eight sides.

An example of a polygon is a triangle, a figure with three sides.

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A closed plane figure having three or more sides. Triangles, rectangles, and octagons are all examples of polygons. &diamf3; A regular polygon is a polygon all of whose sides are the same length and all of whose interior angles are the same measure.
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(geometry) A plane figure bounded by straight edges.
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(geometry) The boundary of such a figure.
noun
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(geometry, more generally) A figure comprising vertices and (not necessarily straight) edges, alternatingly.
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(geometry) Such a figure and its interior, taken as a whole.
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Other Word Forms

Noun

Singular:
polygon
Plural:
polygons

Origin of polygon

  • Late Latin polygōnum from Greek polugōnon from neuter of Greek polugōnos polygonal polu- poly- -gōnos angled –gon

    From American Heritage Dictionary of the English Language, 5th Edition

  • Ancient Greek πολύγωνον (polygōnon), from πολύς (polus, “many") and γωνία (gōnia, “angle").

    From Wiktionary