Conic Section, a Plane Curve
Puzzle 20 of Predators Hard Pack
Question is: Conic Section, a Plane Curve
and the answer is: HYPERBOLA
Word Meaning:
HYPERBOLA — (geometry) A conic section formed by the intersection of a cone with a plane that intersects the base of the cone and is not tangent to the cone. The function y(x) = 1/x draws a hyperbola.
Definitions from Wiktionary.