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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."

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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."

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The name of a polygon with three sides is called a triangle. A four-sided polygon is called a quadrilateral, a five-sided polygon is a called a pentagon and a six-sided polygon is called a hexagon.

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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.

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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.

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A 10-sided polygon is referred to as a decagon. "Deca" is used as a prefix that means 10, and it is used to create compound words.

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A polygon is a plane figure that has "at least three straight sides and angles," according to Oxford Dictionaries. However, polygons can have more than three sides; most have five or more.

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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.

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The polygon with 1,000 sides, 1,000 vertices and 1,000 angles is called a chiliagon or a 1,000-gon. The term "chiliagon," with a Greek-derived prefix meaning “thousand,” is a proposed name for the 1,000-sided, two-dimensional shape, but it is seldom used.

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A polygon with 10 sides is called a decagon. The word comes from the Greek words for "ten" ("deka") and for "angle" or "corner" ("gonia"). Decagons have 10 angles and 10 sides.