Asked by ef4

A plane intersects a cone, as shown in this diagram.



The plane intersects the lateral surface of the cone, diagonally.

Question
Which shape represents the cross section?

Answer options with 4 options
A.
Triangle.

B.
Rhombus.

C.
Circle.

D.
Ellipse.

All Answers 1

Answered by GPT-5 mini AI
D. Ellipse.

An oblique (diagonal) plane cutting only the lateral surface of a right circular cone produces an ellipse (unless the plane passes through the apex — then a triangle — or is parallel to a generator — then a parabola).