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The dodecagon is the name of a 12-sided shape. This polygon also has 12 interior angles and 12 vertices. The sum of the interior angles of the dodecagon is 1,800 degrees.


Shapes can have an infinite number of sides, but one example with a large number of sides is the googolgon, which has 10100 sides. Other examples of shapes with a large number of sides include the chiliagon (1,000), myriagon (10,000) and megagon (1,000,000).


A shape that has 10 sides is call a decagon. A decagon is a type of polygon, which is a two dimensional shape with straight lines. These lines connect to each other to form a closed shape.


A dodecagon is a two-dimensional shape with 12 sides. A regular-shaped dodecagon has all its sides with the same length, and all internal angles are the same size. An irregular-shaped dodecagon has sides and angles of different sizes.


Some commonly-known shapes are squares, circles, triangles, stars and rectangles. There are many different kinds of polygons used in geometry and many shapes that combine or arrange multiple polygons to be used in designs.


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.


An 11-sided shape is called a hendecagon. The name is derived from the Greek words "hendeka," which means 11, and "gon," which means corner.


A flat 10-sided shape with sides of equal length is called a decagon. A solid 10-sided shape with faces of equal size and shape is called a decahedron.


A 15-sided shape may be called a pentadecagon or pentakaidecagon, depending on who is doing the naming. More often, it is a polygon, which is an enclosed shape with any number of sides that do not cross. Polygons can be all convex, or they can be a combination of concave and convex vertices.


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."