Studied by 5 people
Circle
A locus of points in a plane at a fixed distance (r) from a given point (h, k)
Ellipse
A locus of points in a plane for which the sum of the distances from two fixed points (the foci) is constant
Hyperbola
A locus of points in a plane for which the difference of the distances from two fixed points (the foci) is constant
Parabola
A locus of points in a plane that are equidistant from a fixed line (the directrix) and a fixed point (the focus)
Note 
Flashcard (65)