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heptadecagon is a 17 sided 2d shape

It depends on what information you have about the shape.

heptadecadon

Heptadecagon or a Heptakaidecagon

A heptadecagon, I believe.

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

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 2 sided shape is real but a 1 sided shape is not

A 999 sided shape is simply known as a 999 sided shape.

a 30 sided shape

Assuming it is regular, the total degrees of an n-sided polygon = 180(n-2) = 2700. 2700/17 = 158.23 degrees

A million sided shape shape is called a megagon.

An 8 sided shape is an octagon

A five sided shape is a pentagon.

a six sided shape is a hexagon

A four sided shape is a quadrilateral.

a 12 sided shape.

A one sided shape

There is no such thing as a 1 sided shape nor a two sided shape.

An octagon is an 8 sided 2 dimensional shape. A cylinder with the base of a hexagon (6 sided shape) would be an 8 sided 3 dimensional shape.

a one sided shape is called a henagon and a 2 sided shape is called a digon

A 3 sided shape is a triangle. A 4 sided shape could be a square or rectangle.

A seven sided shape is a Heptagon

A nine sided shape is called a nonagon.

No, a nonagon is a 9-sided shape.