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en.wikipedia.org/wiki/Nonagon

In geometry, a nonagon /ˈnɒnəɡɒn is a

www.reference.com/math/nine-sided-shape-called-680afddabbcb9b5c

A nonagon is a closed

mathcentral.uregina.ca/qq/database/qq.09.96/rosa1.html

What do you call a 13

mathforum.org/library/drmath/view/59240.html

What is the name of a 7-

www.algebra.com/algebra/homework/Polygons/Polygons.faq.question.18713.html

A polygon is the name given to an n

www.mcwdn.org/Geometry/OtherPolygons.html

Heptagon - Seven

www.mathleague.com/index.php/about-the-math-league/mathreference?id=75

The side opposite the right angle is

www.quora.com/What-is-a-20-sided-shape-called-and-how-did-it-get-its-name

Jul 28, 2015

www.quora.com/What-is-a-32-sided-shape-called

A 32-

owlcation.com/stem/Names-of-Geometric-Shapes-Complete-Reference-for-Elementary-and-Middle-School

Aug 29, 2016

Answer

More Info

www.math.com

A closed plane figure made up of several line segments that are joined ... Two or
more of these points are

www.mathsisfun.com

... straight sides. To be a regular

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