Question

The locus of point moving in a plane such that the distance between a fixed point and a fixed straight line is constant is called as ________

(a) Conic

(b) Rectangle

(c) Square

(d) Polygon

This question was posed to me in an interview for job.

Question is from Basics of Conic Sections topic in chapter Curves used in Engineering Practice of Engineering Drawing

Answer 1

Right choice is (a) Conic

For explanation I would say: The locus of a point moving in a plane such that the distance between a fixed point and a fixed straight line is always constant. The fixed straight line is called as directrix and the fixed point is called as the focus.