Inverted Plate or Tile

[N. W. Perry]

For the "inverted Plate" I share the view of N.W. Perry

And my view on that is essentially the same as Travis'. I never really thought about it, but while "inverted" makes sense for slopes and bows where there's a shape that can be reflected about a horizontal axis, I can't picture how that would be for a simple plate. "Plate" only connotes the thickness of a part, not anything about its shape.