# Categories

There are exactly three types of conic sections if one allows only the intersection of planes not through the apex: Ellipse (circle), hyperbola and parabola

There are exactly three types of conic sections if one allows only the intersection of planes not through the apex: Ellipse (circle), hyperbola and parabola

Mathematisches Institut

Georg-August Universität Göttingen

Bunsenstraße 3-5

37073 Göttingen