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www.reference.com/article/shape-polygon-e64fe375da0637a4

A polygon can be any number of shapes. A polygon is a two dimensional shape made of at least 3 straight lines that do not cross and is a closed shape. Examples of polygons would include triangles, squares, rectangles, hexagons, and octagons.

www.reference.com/article/polygon-five-sides-two-right-angles-8e3d8e80aa8b8593

A pentagon is a five-sided polygon with two right angles. This is true only if all sides are not equal or congruent, which allows the pentagon to have two right angles. The sides of a regular pentagon are equal in size, which disallows the presence of right angles.

www.reference.com/world-view/polygon-four-sides-four-angles-called-c96e1d6ac2df301d

A polygon with four sides and four angles is called a quadrilateral. Quadrilaterals are two-dimensional, closed shapes with angle measurements that add up to 360 degrees.

www.reference.com/article/names-polygons-cb18134ddb35ae57

Triangles, squares, rectangles, pentagons, hexagons and octagons are some of the most common polygons. A polygon is a plane figure with many sides made up of line segments.

www.reference.com/article/polygon-six-sides-six-angles-8869de0e6460e97

Hexagons are polygons with six sides (or edges) and six angles (or vertices). They are classified as regular or irregular, as well as convex or concave.

www.reference.com/article/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 a combination of "deka," meaning "ten" and "gonia," meaning "corner" or "angle."

www.reference.com/article/name-12-sided-polygon-9c33d166ced44fe0

The accepted name of a 12-sided polygon is "dodecagon." A polygon is a two-dimensional shape consisting of angles and straight lines in a closed system. The word "polygon" comes from the Greek "poly," which means "many" and "gon," which means "sides."

www.reference.com/article/different-types-polygons-a21a98ab5e9651ba

The different types of polygons include convex, concave, regular, irregular, simple or complex. Polygons will have half of these qualities.

www.reference.com/article/11-sided-polygon-223e7008e8ba8b8f

An 11-sided polygon is called a hendecagon. In order for an 11-sided shape to be considered a hendecagon, its sides must all be straight and form a closed shape.

www.reference.com/article/5-sided-polygon-ac23d370568dc0fe

A five-sided polygon is called a pentagon. A pentagon also has five vertices and five interior angles, which add up to a total of 540 degrees.