""New Elements of Conic Sections: Together with a Method for Their Description on a Plane"" is a mathematical treatise written by Philippe De La Hire and published in 1729. The book presents a comprehensive study of conic sections, including ellipses, hyperbolas, and parabolas, and their properties. De La Hire introduces a new method for describing these curves on a plane, which he claims is simpler and more intuitive than previous methods. The book...