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.
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."
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 12-sided shape is called a dodecagon. A dodecagon is a type of polygon, which is a two-dimensional shape comprised of straight lines. These lines connect to each other to form a closed shape.
A 20-sided shape is known as an icosagon. The icosagon is a polygon, and the sum of its interior angles is equivalent to 3,240 degrees.