Ellipse
A conic section which is essentially a stretched circle.
Formally, an ellipse can be defined as follows: For two
given points, the foci, an ellipse is the locus of points such
that the sum of the distance to each focus is constant. The standard
form for the equation of an ellipse is given below.
Movie clip
See
also
Focus, focal radius, directrices
of an ellipse, area of an ellipse, hyperbola
