Polar Coordinate System: A coordinate system where each point is determined by its distance from the origin (represented by r) and its angle from the reference line (represented by θ).
Cartesian Coordinates:A coordinate system where each point is determined by its position along two perpendicular axes, usually represented as x and y.
Parametric Equations:Equations that express variables x and y separately as functions of an independent parameter, often denoted as t.