In elementary geometry, a
A plane shape (two-dimensional) with straight sides. Examples: triangles,
rectangles and pentagons. (Note: a circle is not a
mathematics : a flat shape that has three or more straight lines and angles.
Source: Merriam-Webster's Learner's Dictionary. Examples:
A polygon is a flat figure that is made up of straight lines and is enclosed. A few
notes on the
May 16, 2015
www.mathgoodies.com/glossary/term.asp?term=area of a polygon
A closed plane figure bounded by three or more line segments. [Late Latin polygōnum, from Greek polugōnon, from neuter of Greek polugōnos, polygonal : polu- ...