Which of the following statements describes an ellipse accurately?

An ellipse has two foci and the sum of distances from any point on the ellipse to the foci is constant.

An ellipse can only contain one focus.

An ellipse always intersects the x-axis at two points.

All points on an ellipse are equidistant from the center.

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What is the conic section formed when a plane intersects a cone at an angle of 90° with respect to the axis?

Q2.

Which conic section results from a plane cutting both nappes of the cone?

Q3.

If the angle of the intersecting plane is equal to the angle of the cone, what conic section is formed?

Q4.

Which of the following describes the relationship between the angles for an ellipse to be formed?