A polygon is a closed, two dimensional figure composed of line segments. Squares, hexagons, rectangles and concave octagons are all polygons.

en.wikipedia.org/wiki/List_of_polygons

In geometry, a polygon /ˈpɒlɪɡɒn/ is traditionally a plane figure that is bounded
by a finite ... To construct the name of a polygon with more than 20 and less than
100 edge...

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

Subject: Polygons. From: Manuel. Elementary level (6th Grade) Student Question
. What do you call a 13 sided polygon? Is there a list of the different names?

www.mathsisfun.com/geometry/polygons.html

A polygon is a plane shape with straight sides. Is it a ... A regular polygon has all
angles equal and all sides equal, otherwise it is irregular ... Names of Polygons ...

mathforum.org/dr.math/faq/faq.polygon.names.html

What do you call an 11-sided polygon? A 14-sided polygon? Can you give me a
list of names of polygons?

faculty.kutztown.edu/schaeffe/Tutorials/General/Polygons.html

Naming a polygon by its number of sides requires that we know the ... For more
than 20 sides, we "construct" the name by using so-called combining prefixes: ...

www.math.com/tables/geometry/polygons.htm

Polygon Names ... Name. n. N-gon. 3. Triangle. 4. Quadrilateral. 5. Pentagon. 6 ...
Names for other polygons have been proposed.

www.factacular.com/subjects/Polygon_Names

Facts, quizzes and trivia about Polygon Names, 5, Pentagon, 6, Hexagon and
more.

www.reference.com/math/polygon-names-aba0aaaf580bd44d

Some polygon names include triangle, quadrilateral, pentagon, hexagon and
septagonn. Most polygon names are derived from a Greek word referring to the ...

www.reference.com/math/name-10-sided-polygon-5b39985da917f66d

The name of a 10-sided polygon is a decagon. The term "decagon" comes from
the modern Latin word "decagonum" and from the Greek "dekagonon," which is ...