other than shadows and reflections, are there any 2 dimentional objects

[delta9birrch]

that exist in 3 dimentional space? i am not talking about theoretical objects or concepts; i mean physical things that are observable. i may even be wrong about the shadows and reflections as they are actually photons interacting with other surfaces.
yes. atoms and subatomic particles exist in 3 dimensional space
but then don't photons have 3 dimensions?
the paint or ink or graphite exists in 3 dimensions. do you mean the concept of the picture??

[Corinne]

not that I know of.
but this is an interesting question.

[slyce476]

What about paintings and drawings. I understand that the canvas or paper may tecnically be a 3D object but what about the actual picture.