Imaginary points

(Geom.) points, lines, surfaces, etc., imagined to exist, although by reason of certain changes of a figure they have in fact ceased to have a real existence.

See also: Imaginary

Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in classic literature ?
Pocket"--for so the man familiarly addressed the imaginary point above him on the slope, crying out:
When real-life failure was difficult or frightening, I found places where deaths were followed by respawns, where all I lost was imaginary points and minutes of my time.
Let them talk all they want, but they must negotiate based on reality, not on imaginary points", he said.
I just went skateboarding to skateboard vs trying to rack up imaginary points. It was also around this time that teenagers started looking weird to me and I quit trusting anybody under 30.