nonagon nonahedron nonuplets
a nonagon has nine sides and nine angles and nine corners. It comes from the Latin word 'nonus' meaning nine.
nonagon
Because nonagon means 9 sides
This is called a nonagon, from the Latin root "nonus" meaning ninth.
Not a regular nonagon.
nonet (a group of nine) is one of them.........
A nonagon has nine sides.
A nonagon
"nonagon" is not a prefix.
Nonagon.
A nonagon.