Locus A locus is the set of points that satisfy a given set of conditions.
Reminder: With locus problems, always draw a picture.
5 Basic Loci: Distance from a Point: The Circle Equidistant From Two Points: Perpendicular Bisector Distance from a line: Two Parallel Lines Equidistant from Two Parallel Lines: One Parallel Line 5. Equidistant from Intersecting Lines: The Angle Bisector