An idea or impression that corresponds to external reality.
A copy, reproduction; especially as contrasted with the original, archetype, or prototype.
An object in relievo or embossed.
An impression (in wax, clay, &c.) of a seal or medal.
Closeness of appearance to something else.
A transformation that preserves angles and the ratios of distances
The property of two matrices being similar.
The relation of sharing properties.