PRECal Flashcards
Formed by plane intersecting a cone at an angle at its base. Special type of circle
Ellipse
Midpoint of ellipse
Center
Two fixed points of ellipse
Focus ( foci )
Longest distance that passes through focus
Major axis
Endpoints of Major axis
Vertices
Perpendicular to major axis
Minor axis
endpoints of minor axis
Co - Vertices
A chord dashing through focus
Latera Recta
A line outside ellipse
directrix
Ax2 + By2 - C = 0
Ellipse gen form
x2/a2 + y2/b2 = 1
standard ellipse 0,0 horizontal
x2 / b2 + y2/a2 = 1
standard ellipse 0,0 vertical
(x - h )2/a2 + (y-h)2/b2
standard ellipse h,k horizontal
(x-h )2/b2 + (y-h)2/a2 = 1
standard ellipse h,k vertical
formed because of intersection of plane perpendicular
Hyperbola