What does it mean that photographs are two-dimensional?

In geometry, a two-dimensional shape can be defined as a flat plane figure or a shape that has two dimensions – length and width. Two-dimensional or 2-D shapes do not have any thickness and can be measured in only two faces.

Ais the answer hope this

I'm not sure what your asking buddy.. but i know that you can weld two peices of steel by pure force and pressure.