**TI83F* AppVariable file 12/24/08, 18:30 rGLA210rpnav 26CE319875DD4F1B9DFDCB650E5220B1GLA210.EGLA2101  center+!center:The given point from which all points on a circle are the same distance. In the figure, P is the center of the circle. center of a circle+!center of a circle:The given point from which all points on a circle are the same distance. In the figure,P is the center of the circle. center of an ellipse_center of an ellipse:The point at which the major axis and minor axis of an ellipse intersect. circle+!icircle:The set of all points in a plane that are the same distance from a given point called the center. conjugate axisjconjugate axis:The segment of length 2b units that is perpendicular to the transverse axis at the center. constant differenceconstant difference:The absolute value of thedifference between the distances from any point on the hyperbola to the foci of the hyperbola.  constant sumQconstant sum:The sum of the distances from the foci to any point on the ellipse.  co-verticesico-vertices:Ellipse - The endpoints of the minor axis.Hyperbola - The endpoints of the conjugate axis.  co-vertices of a hyperbola@co-vertices of a hyperbola:The endpoints of the conjugate axis.  co-vertices of an ellipse;co-vertices of an ellipse:The endpoints of the minor axis.   directrix!odirectrix:The set of all points in a plane that are the same distance from a given line, called the directrix.  ellipse!ellipse:The set of all points in a plane such that the sum of the distances from two given points in the plane, called foci, is constant.  focifoci:Ellipse - The two fixed points from which the sum of the distances from a set of all points in a plane is constant.Hyperbola - The two fixed points from which the difference of the distances from a set of all points in a plane is constant. foci of a hyperbolafoci of a hyperbola:The two fixed points from which the difference of the distances from a set of all points in a plane is constant. foci of an ellipse}foci of an ellipse:The two fixed points from which the sum of the distances from a set of all points in a plane is constant. focus!hfocus:The set of all points in a plane that are the same distance from a given point,called the focus.  general formGgeneral form:An equation of a parabola in the form y = ax^2 + bx + c.  hyperbola!hyperbola:The set of all points in the plane such that the absolute value of the difference of the distances from two given points in the plane, called foci, is constant.  latus rectumilatus rectum:The line segment through the focus of a parabola and perpendicular to the axis of symmetry.  major axis]major axis:The longer of the two line segments that form the axes of symmetry of an ellipse.  minor axisminor axis:The shorter of the two line segments that form the axes of symmetry and which does not contain the foci of an ellipse. parabola}!,parabola:The graph of a quadratic function. radius !Lradius:The distance from the center of a circle to any point on the circle.  standard form;standard form:The standard form of the equation of a parabola with vertex (h, k) and axis of symmetry x = h is y = a(x - h)^2 + k.1. If a > 0, k is the minimum value of the related function and the parabola opens upward.2. If a < 0, k is the maximum value of the related function and the parabola opens downward. transverse axisZtransverse axis:The segment of length 2awhose endpoints are the vertices of a hyperbola. verticesbvertices:Ellipse-The endpoints of the major axis.Hyperbola-The endpoints of the transverse axis. vertices of a hyperbola>vertices of a hyperbola:The endpoints of the transverse axis. vertices of an ellipse8vertices of an ellipse:The endpoints of the major axis.8`880,h @0 @ p 0"@@x@@F ppcF? B< @@t@ 8 A @  `@pE8@ <@,h0888`x0@   @@  p>H>p>@@  @@    @0x9`8|8  ( @ @ @(@+@@   @21Q(KQ$I*1  $AV@BUUdUUD5U6@@`0  "TP%Y& 3 Q$#3P0  CJ ``#@@|88`! #p!  @@@@@@@@      % % % @@@@@@   9`>0  @@ P @p` X@ p@ p@ p@ $J@ @ 0>8` ?0 0s0` 00 3@@@ ``     `0 A@L@@s9π@@     @@ 0p?I