It's a 2D shape.
a pyramid is a 3D shape :)
Paper is a 3D object.
3D
The suffix "hedron" implies 3D. The 2D suffix is "gon"
A camera is a 3D shape. A photograph is a 2D projection of a 3D shape onto a 2D shape.
2d
A television set is a 3D shape. The image (picture) on the television screen is a 2D shape. 3D is when it has length, width, and height. 2D is only length and width.
It's a 2D shape.
A piece of paper is 3D.
2d
2D.
a pyramid is a 3D shape :)
It's a 2D shape.
Paper is a 3D object.
3D
A nonagon is a 2D shape and there is not a 3D equivalent shape.