The semimajor axis of an ellipse is
A) the distance from the center of the ellipse to one end, along the largest diameter of the ellipse.
B) the distance from the center to one side of the ellipse, along the shortest diameter of the ellipse.
C) the distance from one focus to any point on the circumference of the ellipse.
D) half the distance between the foci of the ellipse.

Question

Quizplus · Accepted Answer

The semimajor axis of an ellipse is defined as the distance from the center of the ellipse to one of its ends along the longest diameter. This makes it the largest radius of the ellipse.

The Semimajor Axis of an Ellipse Is