👉 In geometry, a sub-ellipse is an ellipse that is narrower than a circle. It has two foci and one directrix. The term "sub-ellipse" refers to this type of ellipse.
👉 In geometry, a sub-ellipse is an ellipse that is narrower than a circle. It has two foci and one directrix. The term "sub-ellipse" refers to this type of ellipse.
