



LESSON 1: DEFINITION OF LOCUS
The
Concept of Locus:
Locus is derived from the Latin word for
place or position.
Definition: A locus of points is a set of points which satisfy one or more
given conditions.
A simple
example is a circle. A circle is a
locus (set) of points each of which is a constant distance
from a
fixed point. The fixed point is the centre of the circle and the fixed distance is the radius.