Geometry: A Comprehensive Course
"A lucid and masterly survey." — Mathematics Gazette Professor Pedoe is widely known as a fine teacher and a fine geometer. His abilities in both areas are clearly evident in this self-contained, well-written, and lucid introduction to the scope and methods of elementary geometry. It covers the geometry usually included in undergraduate courses in mathematics, except for the theory of convex sets. Based on a course given by the author for several years at the University of Minnesota, the main purpose of the book is to increase geometrical, and therefore mathematical, understanding and to help students enjoy geometry. Among the topics discussed: the use of vectors and their products in work on Desargues' and Pappus' theorem and the nine-point circle; circles and coaxal systems; the representation of circles by points in three dimensions; mappings of the Euclidean plane, similitudes, isometries, mappings of the inversive plane, and Moebius transformations; projective geometry of the plane, space, and n dimensions; the projective generation of conics and quadrics; Moebius tetrahedra; the tetrahedral complex; the twisted cubic curve; the cubic surface; oriented circles; and introduction to algebraic geometry. In addition, three appendices deal with Euclidean definitions, postulates, and propositions; the Grassmann-Pluecker coordinates of lines in S3, and the group of circular transformations. Among the outstanding features of this book are its many worked examples and over 500 exercises to test geometrical understanding.
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COAXAL SYSTEMS OF CIRCLES
THE REPRESENTATION OF CIRCLES BY POINTS IN SPACE OF THREE DIMENSIONS
MAPPINGS OF THE EUCLIDEAN PLANE
MAPPINGS OF THE INVERSIVE PLANE
THE PROJECTIVE PLANE AND PROJECTIVE SPACE
THE PROJECTIVE GEOMETRY OF n DIMENSIONS
THE PROJECTIVE GENERATION OF CONICS AND QUADRICS
PRELUDE TO ALGEBRAIC GEOMETRY
2ero affine algebraic angle axes called center of inversion coaxal system collinear points collineation complex numbers conic consider coplanar corresponding cosets cross-ratio cubic curve deduce defined Desargues Theorem direct isometry distinct points equal equation equivalent Euclidean plane fixed points four points Gauss plane given circles given line given point harmonic conjugates Hence homogeneous coordinates hyperplane inversive plane involution lies line at infinity line joining line reflexion linear linearly independent locus mapping matrix midpoints Moebius transformation nine-point circle non-singular obtain one-to-one pair of points pass pencils of planes perpendicular plane section point of intersection point-circle point-conic polar plane projective plane projective transformation proof prove quadric surface radical axis radius ratio real Euclidean plane real numbers regulus represents rotation set of points Show similitude skew lines straight line subgroup subspaces tangent plane transversal triangle ABC vertex vertices