 Confocal conic sections

Confocal conic sections refer to a set of conic sections (such as ellipses, parabolas, and hyperbolas) that share a common focus. In the context of conic sections, "confocal" means that the curves have the same focal point(s). This concept is primarily studied in the fields of geometry and mathematical analysis. ### Key Points: 1. **Conic Sections**: These are curves obtained by intersecting a cone with a plane.