Two Geometrical Memoirs On The General Properties Of Cones Of The Second Degree And Of The Spherical Conics (1841) : Kessinger Publishing : 9781437358537 : 1437358535 : 10 Dec 2008 : ""Two Geometrical Memoirs On The General Properties Of Cones Of The Second Degree And Of The Spherical Conics"" is a book written by Michel Chasles and published in 1841. The book is a detailed exploration of the properties of cones of the second degree and spherical conics. It is divided into two parts, each of which focuses on one of these topics.In the first part, Chasles discusses the general properties of cones of the second degree. He explores the different types of cones and their properties, including their intersections with other cones and their relationship to other geometric shapes. He also discusses the equations that describe these cones and their solutions.In the second part of the book, Chasles focuses on spherical conics. He examines the properties of these curves on a sphere and their rel