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A polygon with 9 sides is called a nonagon. A nonagon is a closed shape with nine straight sides and nine angles. It is also known as an enneagon. Each interior angle of a regular nonagon measures 140 degrees.

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6mo ago

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The 9 lined polygon is called enneagon or nonagon.

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Wiki User

14y ago
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  1. A enneagon or nonagon
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Q: What polygon has 9 sides?
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