# *Ellipse An ellipse is a closed curve like a circle. An ellipse may be drawn by choosing two points F1 and F2, each of which is a

*Ellipse

An ellipse is a closed curve like a circle. An ellipse may be drawn by choosing two points *F*_{1 }and *F*_{2}, each of which is a called a focus, and then drawing a curve through points for which the sum of the distances *PF*_{1} and P*F*_{2}, respectively, is a constant.

If the center of ellipse is at point origin

Note if a = b, ellipse becomes a circle of radius a.

Area of ellipse = πab