Conic Sections (Parabola, Ellipse, Hyperbola, Circle ...
Let us briefly discuss the different conic sections formed when the plane cuts the nappes (excluding the vertex). Conic Section Circle. If β=90 o, the conic section formed is a circle as shown below. Conic Section Ellipse. If α<β<90 o, the conic section so formed is an ellipse as shown in the figure below. Conic Section Parabola