If a point moves in such a way that it satisfies some given geometric conditions at each instant during its motion, then the path traced out by the moving point is called its locus.

A point that does not satisfy the given geometrical condition (or conditions) cannot lie on the locus.

The Locus of a point equidistant from a fixed point is a circle with a fixed point as the center.

The locus of a point, equidistant from two given points, is the perpendicular bisector of the line segment joining the two points

## Loci PDF

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