Logo

Ellipse Geometry

An ellipse is a shape like a flattened circle.

An ellipse has some important dimensions: the major axis and the minor axis, which when halved give the semi-major axis and semi-minor axis. It also has an area, which is the amount of space contained by an ellipse.

This widget allows you to find the semi-major axis, semi-minor axis, major axis, minor axis and area of an ellipse.

Learn About Ellipse Geometry

Draw an ellipse by:

  • Clicking on the canvas, or
  • Entering both the semi-major and semi-minor axis or the major and minor axis.

Dimensions of the Ellipse

= 2 × semi-major axis

= 2 × semi-minor axis

= π × semi-major axis × semi-minor axis