Q:

What is a 100-sided shape called?

A:

A 100-sided polygon is a hectagon. It comes from the Greek prefix "hecta," which means "100," and "gon" from "gonu," which means "knee," but later denoted "angle."

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A polygon is a closed two-dimensional geometric figure containing several line segments, where each side intersects only two other segments at what is called a vertex. Some commonly used prefixes that denote the number of sides of a polygon include "tetra," "penta," "hexa," "hepta" and "octa," used for the numbers 4, 5, 6, 7 and 8, respectively. Generally accepted polygonal names are pentagon, hexagon, heptagon, octagon, nonagon and decagon. An "n-gon" is a type of polygon with n number of sides, where n is a variable.

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Related Questions

• A:

Assuming that it is a polygon, or a shape with closed sides, a 14-sided shape is called a tetradecagon or a tetrakaidecagon. Any polygon could also be called an n-gon, where n is the number of sides. Here, a 14-sided shape would be a 14-gon.

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• A:

In geometry, a shape, or polygon, with eight sides is called an octagon. A common example of an octagon in the real world is the stop sign. The octagon is also used in architecture, and umbrellas often come in an octagonal shape.

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Unlike a regular shape, an irregular shape is a polygon with sides that aren't all equal and unequal angles. Some conventional geometric shapes, such as the rectangle, parallelogram and rhombus, are irregular. A rectangle has four 90 degree angles, but its sides aren't all the same length. A rhombus and parallelogram both have four equal sides, but they each have two inward angles and two outward angles.