1. An idealized, static, 3-D concept that refers only to the upper cross-section or layer of a surface
which, hypothetically, does not encroach upon a third dimension.
The word flat implicitly invokes two locations as references. It alludes to a perfectly smooth surface that is
perfectly parallel with the line of sight. However, neither of these criteria can be used to define the
adjective flat because both are proofs.
The 2-D counterpart of flat is plane. For the purposes of Science, ideal planes such as triangles and
circles are not flat. In Science, only surfaces can be said to be flat.
Copyright © by Nila Gaede 2008