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# Algebra 2 unit 4

TermDefinition
Conic Section intersection of a plane with one or both nappes of a double cone.
Circle The locus points of points in a plane that are equidistant from one point, called the center
Ellipse The locus of points in a plane such that the sum of the distances from any point in the locus to two points, called the foci, is a constant
Hyperbola The locus of points in a plane such hat the difference of the two fixed points called the foci is a constant
Parabola The locus of points in a plane that are equidistant from a line and a point not on the line
Major Axis The line through the vertices of an ellipse
Transverse axis the line joining the two vertices of an ellipse
Directrix the line along with a point not on the line which is used to generate a parabola
Eccentricity a Measure of how close an ellipse is to being circular
Astmptote one of two lines through the center of a hyperbola that the hyperbola approaches but never intersects
Focus one of two points such that the difference of the distances from any point on the hyperbola to the foci is a constant
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