The Ellipse

The ellipse is symmetric about two mutually ____________ axes.

The __________ of an ellipse has a maximum value of a/b squared at the points where it intersects the major axis and has a minimum value of b/a squared at the points where it intersects the minor axis.

Every ellipse has two axes of symmetry. The longer axis is called the major axis, and the shorter axis is called the _______ axis.

_______ points are any two points on the perimeter of the ellipse such that the line segment joining them must pass through the centre C of the ellipse

The ______ of an ellipse, -ac and +ac, lie on the ellipse's major axis and are equidistant from the center.

Foci are points along the major axis of an ellipse that determine how ________ or eccentric it is.

The positions of the foci of an ellipse are ________ which means you can choose any two points on the plane to be the foci of a family of ellipses.

The maximum distance between two antipodal points occurs along the horizontal axis (also called the ______ diameter), and the minimum distance between two antipodal points occurs along the vertical axis (called the _________ diameter).

• major / minor

• transverse / conjugate

• horizon / vertical

• vertex / conjugation

If the eccentricity equals 0 the foci meet at the center point

and form a _____ .

The focal ___ of an ellipse is one that passes through its focus.