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Level 502

Ellipse & Circle


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Circle
the set of all points (x,y) that are equidistant from a fixed point, called the center of the circle.
radius
From center to a point on the circle.
ellipse, foci
an ________ the set of all points P such that the sum of the distances between P and two distinct fixed points, called the ______________, is a constant
vertices
The perpendicular bisectors of a triangle intersect at a point that is equidistant from "these" of the triangle
major axis, center
the line segment joining the vertices is the _____________________, and its midpoint is the ________ of the ellipse.
co-vertices
the line perpendicular to the major axis at the center intersects the ellipse at two points called the _______________.
Minor Axis
The shorter axis on an ellipse with co vertices