The Unabridged, Second Impression, Including Notes And Corrections, And Over 100 Figures: Theorems Of Alignment And The Principle Of Duality - Projection, Section, Perspectivity, Elementary Configurations - Projectivities Of The Primitive Geometric Forms Of One, Two, And Three Dimensions - Harmonic Constructions And The Fundamental - Theorem Of Projective Geometry - Conic Sections - Algebra Of Points And One Dimensional Coordinate Systems - Coordinate Systems In Two And Three Dimensional Forms - Projectivities In One Dimensional Forms - Geometric Constructions, Invariants - Projective Transformations Of Two Dimensional Forms - Families Of Lines - Comprehensive Index