A nonagon has nine sides, nine angles and nine corners (vertices).
Nine corners and nine sides.
9
It has nine corners (vertices). Whether it is irregular or not is an irrelevance.
9
9. The prefix nona means 9.
A nonagon has 9 sides
a nonagon has nine sides and nine angles and nine corners. It comes from the Latin word 'nonus' meaning nine.
a nonagon
An object with nine corners (and therefore nine sides) is a nonagon.
Yes
one.