line that a graph approaches as one of the variables approaches infinity or negative infinity
line perpendicular to the transverse axis of a hyperbola and that intersects it at the center of the hyperbola
line used with the focus to define a parabola. For any point on the parabola, the distance to the focus is equal to the distance to the directrix.
geometric figure made up of two cones that are opposite each other with their vertices at the same point
set of points such that the sum of the distances from two fixed points called the foci remains the same
rectangle used as a guide to graph a hyperbola. The diagonals of the rectangle are the asymptotes of the hyperbola, and the vertices of the hyperbola are the midpoints of two sides of the rectangle.
set of points such that the difference of the distances from two fixed points called the foci remains the same
set of points such that the distance from a fixed point called the focus is equal to the distance to a line called the directrix