Circle, Parabola, Flashcards
set of all points having the same distance from a given point
Circle
Set of points equidistant from a fixed point and the fixed line
Parabola
Point on a parabola that is closest to the focus and directrix
Vertex v the h&k
Fixed point outside the parabola
Focus F
A fixed line outside the parabola that is perpendicular to the axis of symmetry
Directrix
Refers to the opening of the parabola
Concavity or orientation
A line perpendicular to the directrix that passes through the vertex and focus
Axis of symmetry
Record or line segment that passes through the focus and is perpendicular to the axis of symmetry it determines the width of parabola at the focal point F
Latus rectum
(x-h)² =4a (y-k)
Upward
(x-h)² =-4a (y-k)
Downward
(y-k)² = 4a (x-h)
Rightward
(y-k)=-4a (x-h)
Leftward