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If the plane cuts one nappe perpendicular to the cone axis, it is an?

Circle

If the plane cuts one nappe at an angle with the cone axis, it is an?

Ellipse

If the plane intersects both nappes and is parallel to the cone axis, it is an?

Hyperbola

If the cutting plane passes through the vertexxt perpendicular to the cone axis, this is a?

Degenerate Ellipse

If the plane cuts through a side of the cone through the vertex, it is an?

Degenerate Parabola

If the cutting plane passes through the cone axis containing the vertex and two sides of the cone, we obtain two intersecting lines. It is an?

Degenerate Hyperbola