Curiosa mathematica, Part 1Front matterReading editionChapter navigation12 reading sectionsGo to chapterChoose a chapter…Front matterA NEW THEORY OF PARALLELSCuriosa MathematicaPREFACE TO THIRD EDITION.INTRODUCTION.A NEW THEORY OF PARALLELS. Book I.Book II.APPENDIX I.APPENDIX II.APPENDIX III.APPENDIX IV.WORKS BY C. L. DODGSON.Beginning of this editionNext chapter →A NEW THEORY OF PARALLELSAll chapters and sections (12)Opening pagesFront matterOther sectionsA NEW THEORY OF PARALLELSCuriosa MathematicaPREFACE TO THIRD EDITION.INTRODUCTION.Books12Part 1 · Other sectionsAPPENDIX I.APPENDIX II.APPENDIX III.APPENDIX IV.WORKS BY C. L. DODGSON.Dodgson's 1888 witty defense of Euclidean geometry, replacing the Parallel Postulate with a simpler axiom while resisting the growing influence of non-Euclidean alternatives.[TURN OVER.◇A NEW THEORY OF PARALLELS →