A nine-sided shape is called a nonagon or enneagon. A nonagon is a type of polygon. Polygons are closed-plane figures that are made of line segments.
The name "nonagon" is derived from the combination of the Latin word "nonus," which means "ninth," and the Greek word "gonu," or "knee." The name "enneagon," derived wholly from Greek, is less common. The literal translation is "nine corners." The nonagon is an equilateral polygon. All of the lines are the same length, and the shape is convex. A straight line can be drawn through the shape, and it crosses two sides. Every interior angle is less than 180 degrees.
Learn MoreA nine-sided polygon is commonly called a nonagon. This polygon, which has nine edges, or vertices, is also called an enneagon. The term enneagon is preferable, but less popular than the name nonagon because the latter is simpler to spell and pronounce, according to Wolfram MathWorld.
Full Answer >A nine-sided polygon is called a nonagon. The prefix "non" is derived from the Latin "nonus," which means "ninth" to allude to the nine sides and angles of the polygon.
Full Answer >A nonagon is a closed shape that has nine sides. If it is a regular nonagon, all nine sides are the same length, and all the angles are equal.
Full Answer >A two-dimensional shape with nine straight sides is called a nonagon. This nine-sided polygon, which also has nine edges or vertices, is also called an enneagon. The term enneagon is preferable, but less popular than the name nonagon because the latter is simpler to spell and pronounce.
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