An ellipse is a planar figure that is a translation and/or rotation of a figure with parametric equations

*x* = *a* cos *t*

*y* = *b* sin *t*

where *a * is the length of the semimajor axis and *b* is the length of the semiminor axis.

© 1996-2008 Institute for Studies in Educational Mathematics

Please do not reproduce without permission.

http://www.edmath.org/MATtours/ellipses/

Last updated: 10 June, 2008

MATtours project team led by Larry Copes