Centigon would have to be the name of a shape with 100 sides. There is no official name but you would use the prefix of the number, which in this case is "centi-".
Chat with our AI personalities
100 sided shape is called a hectagon (apparently, this is according to another website :] )
Icomentostroshedron
Decagon. A decagon is the name of a ten sided shape.
A 10-sided shape is a decagon.
A Pentacontagon is a fifty sided shape ...