What Do You Call A Polygon With 9 Sides?
When it comes to geometry, polygons are shapes that have three or more straight sides and angles. They are a fundamental part of mathematics and are used in various fields such as architecture, engineering, and art. In this article, we will focus on a specific type of polygon - the one with nine sides. What is it called? Let's find out.
The Name of a Nine-Sided Polygon
A polygon with nine sides is called a nonagon. It is also known as an enneagon, which comes from the Greek words "ennea" meaning "nine" and "gon" meaning "corner" or "angle." The word "nonagon" is derived from the Latin word "nonus" meaning "ninth" and "gon" meaning "angle."
Properties of a Nonagon
Like any other polygon, a nonagon has its own set of properties that make it unique. Here are some of the characteristics of a nonagon:
- A nonagon has nine sides and nine angles.
- All nine angles of a nonagon add up to 1260 degrees.
- A nonagon has 36 diagonals.
- A regular nonagon has equal sides and angles.
Real-Life Examples of Nonagons
Nonagons are not as commonly found in everyday life as other polygons such as triangles or rectangles. However, they can be seen in various structures and objects. Here are some examples:
- The United States Enneagram Association's logo features a nonagon.
- The Nonagon Brewery in Michigan is named after the polygon.
- The facade of the Bank of Georgia headquarters in Tbilisi is designed as a nonagon.
Nonagons in Art
Nonagons have been used in art for centuries. In Islamic art, nonagons are a common motif in geometric patterns. They are also present in Celtic art, where they are called enneagrams. Nonagons are often used in mandalas, which are spiritual and ritual symbols in Hinduism and Buddhism.
Conclusion
A nonagon is a polygon with nine sides and nine angles. Its name comes from the Latin word "nonus" meaning "ninth" and the Greek word "gon" meaning "angle." Nonagons are not as common as other polygons in everyday life, but they can be seen in various structures and objects. They have also been used in art for centuries, particularly in Islamic and Celtic art. Knowing the name and properties of a nonagon is useful in geometry and other fields that involve shapes and angles.
So, the next time you come across a nine-sided shape, you know what to call it - a nonagon!
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