1080 ish.
The internal angles of an n-sided shape add to (n-2)*180 degrees. So, for an 8-sided shape, they would add to 6*180 = 1080 degrees.
For a plain 2-dimensional figure it is an OCTAGON. For a 3-dimensional object it is an OCTAHEDRON.
a octagon
octohedron
An 8 sided shape is called an octagon
An eight-sided shape is called an octagon.
An eight sided shape is called an octagon.
Eight sided shape is called octagon.
The name of an 8-sided polygon is octagon
A 2-Dimensional shape with 8 sides is called an Octagon.
An 8-sided shape is an octagon, as the prefix oct means 8.
Octahedron
Octagon
An irregular octagon
It is called an octagon and an irregular octagon can take any shape.
Any shape that is an 8 sided figure is called an octagon