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Nonagon | Enneagon (English)

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Definition (keystage 2)

A polygon that has nine sides and nine angles, more properly (but less often!) called an enneagon.
A regular nonagon has nine equal sides and nine equal angles.

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Relations

broader:: (en) Polygon
references:: (en) Nine
see also:: (en) Decagon; (en) Heptagon; (en) Octagon

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