You know what it looks like… but what is it called?
TAKE THE QUIZ“at infinity”
The following 2 entries include the term at infinity.
plane at infinity
: the aggregate of all points at infinity in projective geometry of three dimensions
point at infinity
: an ideal mathematical point in projective geometry that preserves the magnitudes of all angles of a transformed plane
Love words? Need even more definitions?
Merriam-Webster unabridged