a nonagon has nine sides and nine angles and nine corners. It comes from the Latin word 'nonus' meaning nine.
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Nonagon = 9 sides Hexagon = 6 sides So answer = 3
2. A nonagon has 9 sides and a heptagon has 7 sides. If you subtract 7 from 9 (9-7), only 2 sides remain.
1
A regular polygon with an exterior angle of40O is a nonagon, and has 9 sides.
The internal angles of a regular nonagon (a polygon having 9 sides) are obtuse angles of 140o.