Degenerate Conic Sections
Plane figures that can be
obtained by the intersection of a double
cone with a plane passing through
the apex. These include a point, a line,
and intersecting lines.
Like other conic sections, all degenerate conic sections have equations of the form Ax^{2} + Bxy +
Cy^{2} + Dx +
Ey + F = 0.
See also
Degenerate
