Hipintigon
There is no such thing as a 1 sided shape nor a two sided shape.
A Centillion Sided polygon is called a Hipintigon. I say this because the very large illions are based on polygons. And because illion number 1 Hectillion is a Hipintillion, I used the way to turn polygons into illions and just reversed it. There you go!
1 centillion = 10303
1 centillion = 10303
a 2 sided shape is real but a 1 sided shape is not
A centillion is equal to 1 followed by 303 zeros. Therefore, a zero 1 centillion would be a centillion with one less zero, making it 1 followed by 302 zeros.
a circle
Yes a monogon
Pintigon
Dekingon
Killigon
A googol. It is a 1 with 100 zeros after it.