What is a Locus Locus A locus is a set of points which satisfies a certain condition.As seen by the headlights (and taillights) in the picture below, a locus of points (the headlights or taillights) is the path traced out by the moving points under given conditions (following the road). Think of a locus as a "bunch" of points that all do the same thing. In Latin, the … [Read more...] about What is a Locus