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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.

The five-pointed star on the flag of the United States is actually an irregular decagon, as each of the stars has 10 sides. It is considered irregular because the angles and sides are not equal. A regular decagon, a decagon whose 10 sides are all equal in length, has interior angles that each contain 144 degrees. The exterior angles, or the angles formed by the outside corners of a decagon, each contain 36 degrees.

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## What is a ten-sided polygon?

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Full Answer >**A 10-sided polygon is known as a decagon.**A polygon is a closed plane figure with many sides that connect at its endpoints. Two sides meet to form a vertex, and the sides never cross each other.Filed Under: - Q:
## What is a 12-sided polygon called?

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Full Answer >**A 12-sided two-dimensional polygon is called a dodecagon.**A regular dodecagon has 12 sides that are all the exact same length and internal angles that are 150 degrees each. Since there are 12 internal angles, the total internal angles add up to 1,800 degrees.Filed Under: - Q:
## What is a four-sided polygon called?

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Full Answer >**A four-sided polygon is called a quadrilateral.**"Quad" means four and "lateral" means side, so quadrilateral truly means four sides. The internal angles in a quadrilateral add up to 360 degrees.Filed Under: - Q:
## What is a 100-sided polygon called?

A:A 100-sided polygon is called a hectogon, centagon or 100-gon. In general, any n-sided polygon with over 12 sides is called an n-gon. While there are other conventions for naming polygons with any number of sides, it is most common to use the n-gon form.

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