A fifteen sided shape is called a pentadecagon. It is sometimes called a quindecagon or a pentakaidecagon.
The name for a 57 sided shape is derived by combining the name for a 50 sided shape with the name for a 7 sided shape. A 57 sided shape is called a pentacontaheptagon.
A 14 sided shape is called a Tetradecagon.
hundred sided shape is called a chlligon
A million sided shape is called a Megagon.
A 70 sided shape is called a heptacontagon.
A regular 5-sided shape is called a pentagon.
Why not just call it "a 130-sided shape"? because its not called that, spaz.
All I can tell you is that a 16 sided shape is called a Hexadecagon
A 16 sided shape is called a hexadecagon, also known as a hexakaidecagon.
An 80 sided shape is called a Octacontagon.
I don't believe there is a name for the first one, but a 14-sided shape is called a tetradecagon.