# What is a seven-sided shape called?

A seven-sided shape is called a heptagon. Some people refer to heptagons as septagons, but this mixes a Greek suffix with a Latin prefix, so it is not the preferred usage.

A heptagon is a type of polygon, which Math.com defines as a plane figure with several line segments that join together but do not intersect. All of the angles and sides are equal in a regular heptagon.

In Germany, the Mausoleum of Prince Ernst was constructed using a heptagonal floor plan. This type of floor plan is rarely used in architecture. The Barbados dollar coin is also in the shape of a heptagon.

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Q&A Related to "What is a seven-sided shape called?"
 A heptagon is the shape that has seven sides. All sides and all angles are equal. This is a very uncommon shape, the octagon and hexagon are a little more popular. http://www.ask.com/web-answers/Science/Mathematics...
 Heptagon is a seven sided shape. http://www.chacha.com/question/what-is-a-seven-sid...
 That's a. Heptagon or a septagon. http://wiki.answers.com/Q/What_is_a_seven_sided_sh...