The Conics (book by Apollonius)

*The Conics* by Apollonius is a foundational mathematical work exploring the properties of conic sections—ellipses, parabolas, and hyperbolas. These curves are formed by slicing a cone at different angles. The book systematically analyzes their geometric properties and relationships, establishing principles that underpin modern geometry, astronomy, and physics. Apollonius’s work introduces methods to understand these curves' shapes, equations, and intersections, greatly advancing the study of conic sections and laying important groundwork for later mathematical developments.