Two cones are cut by a plane as shown, where the plane is perpendicular to the bases. the cross-section of the cones and the plane is

Hyperbola

Step-by-step explanation:

A conic section is a figure formed by the intersection of a plane and a circular cone. Depending on the angle of the plane with respect to the cone, a conic section may be a circle, an ellipse, a parabola, or a hyperbola.

When the cutting plane is perpendicular to the bases, then two cones connected by vertex will give a hyperbola

THus a hyperbola is formed when two cones are cut by a plane perpendicular to the bases of the cones.

Answer is hyperbola

The line joining the foci is called the principal axis and the points of intersection of the conic with the principal axis are called the vertices of the conic. The line segment joining the vertices of a conic is called transverse axis in the hyperbola

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step-by-step explanation: