According to various other websites, a twenty-two sided shape is known as an icosikaidigon. :)
When you type it on a computer, it may have a red line underneath it but that is how you spell it. I don't know why it's not there. I mean nonagon isn't there either!
10 sided 2D shape is called a decagon 20 sided 2D shape is called a icosagon 30 sided 2D shape is a swimming pool 40 sided 2D shape is unknown 50 sided 2D shape is unknown 60 sided 2d shape is unknown 70 sided 2d shape is unknown 80 sided 2d shape is unknown 90 sided 2d shape is unknown 100 sided 2d shape is unknown 110 sided 2d shape is unknown 111 sided 2d shape is unknown 120 sided 2d shape is unknown 130 sided 2d shape is unknown
A 2d nine sided shape is called a nonagon.
A 2D shape with forty sides is known as a tentracontagon.
Its called a HEPTAGON
A 14 sided polygon is called a tetrakaidecagon.
heptadecagon is a 17 sided 2d shape
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Hendecagon
hexagon
enneadecagon
Decagon
Hexakaidecagon