A six-sided object is called a hexagon.
A hexagon
It's a 6 sided shape.
Cube.
A hexagon.
hexagon
An object with 6 corners is called a hexagon.
Octahedron.
There is no such thing as a two-sided object.
A nine-sided object is known as a nonagon.
...um...a 6 sided object with each side being completely identical to the others
the Greeks used prefexes up to ten, modernly we have sdded dodecagon for a twelvesided object and undecagon for an eleven sided object so the propor name would be a 27 sided object.