In ______ lines, the distance between them always remains constant.
The distance between parallel lines always remains constant.
If the distance between any two lines is always constant then the lines:
The two lines moving in the same direction & always having an equal distance between them are known as:
A conic section is a locus of a point P which moves in such a way that its distance from a fixed point S always bears a constant ratio to its distance from a fixed line, all being in the same plane. The fixed point is called …… and the fixed line is called ……