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# What are all the shapes and their names?

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### Quick Answer

Shapes are defined as geometric objects that possess outlines or external surfaces. Common shape names include circle, oval, triangle, square, rectangle, cylinder, star, pyramid and heart.

Know MoreShapes often have specific names depending on how many sides they have; a hexagon, for example, has six sides, as the Greek prefix for six is "hex." As there is no limit to how many sides a shape may have, there is no realistic way to compile a complete list of shapes. Shapes can be regularly named, however.

Some commonly understood, and uniquely named, two-dimensional shapes are squares, triangles and circles. Shapes with three through twenty sides often have unique names; above that, the names are constructed based on Greek or Latin prefixes. A 78-sided polygon, for example, would be a heptacontakaioctagon. This name is explained thus: "heptaconta" means "70," "kai," means "and" and "octa" means "eight." The name, translated, would be "70 and 8 sided shape."

These are all polygons, the blanket term for such shapes. Generally polygons can be regular or irregular; regular polygons have the same length of sides and are symmetrical, while irregular polygons are neither. The absolute limit on a polygon's sides is with an apeirogon. This geometric shape is a theoretical, degenerate geometric figure with an infinite number of sides.

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## What are 3-D shapes?

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Full Answer >**Three-dimensional shapes are solid shapes that exist in three dimensions, which include length, width and depth.**The main difference between 3-D shapes and 1-D or 2-D shapes is that depth is incorporated along a third axis outside of the original 2-D plane.Filed Under: -
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## What are some names of shapes?

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Full Answer >**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.Filed Under: -
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## What are irregular shapes?

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Full Answer >**Irregular shapes are those with sides of different lengths and angles that are unequal.**Regular shapes have sides with equal lengths and have angles of the same size.Filed Under: -
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## What are 2-D and 3-D shapes?

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Full Answer >**Two-dimensional, or 2-D, shapes are those that exist in only two dimensions while three-dimensional, or 3-D, shapes exist in three dimensions.**Both 2-D and 3-D shapes typically have length and width dimensions, also referred to as "x" and "y" dimensions, but 3-D shapes also have a depth dimension in the "z" direction.Filed Under: