It may, or it may not, be symmetrical. There are different types of nonagons.
NO
nonagon
Because nonagon means 9 sides
Some synonyms of symetrical are: balanced, commensurate, equal, proportional, regular, shapely, commensurable.
Yes, it is.
A starfish.
Yes
Yes.
Not a regular nonagon.
they paint symetrical to show relaxation and kindness and exactly the same on each side
A nonagon has nine sides.
Nonagon.