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Chapter companions for Flatland by Edwin A. Abbott.

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  1. Chapter 1

    Dedication

    The author, a humble native of Flatland, dedicates this work to the inhabitants of space in general and H. C. in particular, expressing hope that just as he was initiated into the mysteries of three dimensions, the citizens of the celestial region may aspire to even higher dimensions, thereby enlarging the imagination and developing modesty among the superior races of solid humanity.

  2. Chapter 2

    Preface to the Second and Revised Edition, 1884

    The Editor introduces the Square's second edition, addressing two objections: an intellectual one about the unrecognized dimension of height in Flatland, and a moral one about the Square's alleged woman-hating and aristocratic tendencies. The Square, now aged and imprisoned, defends his views through the Editor, acknowledging the limitations of perception and the tyranny of dimensional prejudice, while also modifying his personal opinions on women and the lower classes.

  3. Chapter 3

    Flatland

    The Square introduces the world of Flatland, a two-dimensional plane inhabited by geometric figures, and explains its social hierarchy, where polygons are ranked by the number of their sides and women are represented as straight lines.

  4. Chapter 4

    Part I: This World

    The narrator, a Square, introduces the world of Flatland, a two-dimensional plane inhabited by geometric shapes. He describes the social hierarchy based on the number of sides, with Circles at the top and Isosceles Triangles at the bottom, and explains the laws of nature and perception in this world.

  5. Chapter 5

    I: Of the Nature of Flatland

    The narrator, a Square, introduces the two-dimensional world of Flatland, explaining its geometry and the limitations of perception. He describes how inhabitants appear as straight lines to each other due to the lack of a third dimension, using the analogy of a penny viewed edge-on. He contrasts this with the privileged perspective of Spacelanders and hints at his own expanded understanding after visiting Spaceland.

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  1. Chapter 6Of the Climate and Houses in Flatland
  2. Chapter 7III: Concerning the Inhabitants of Flatland
  3. Chapter 8Concerning the Women
  4. Chapter 9V: Of Our Methods of Recognizing One Another
  5. Chapter 10VI: Of Recognition by Sight
  6. Chapter 11VII: Concerning Irregular Figures
  7. Chapter 12Of the Ancient Practice of Painting
  8. Chapter 13IX: Of the Universal Colour Bill
  9. Chapter 14X: Of the Suppression of the Chromatic Sedition
  10. Chapter 15Concerning Our Priests
  11. Chapter 16XII: Of the Doctrine of Our Priests
  12. Chapter 17Part II: Other Worlds
  13. Chapter 18XIII: How I Had a Vision of Lineland
  14. Chapter 19XIV: How I Vainly Tried to Explain the Nature of Flatland
  15. Chapter 20XV: Concerning a Stranger from Spaceland
  16. Chapter 21How the Stranger Vainly Endeavoured to Reveal to Me in Words the Mysteries of Spaceland
  17. Chapter 22How the Sphere, Having in Vain Tried Words, Resorted to Deeds
  18. Chapter 23How I Came to Spaceland, and What I Saw There
  19. Chapter 24XIX: How, Though the Sphere Showed Me Other Mysteries of Spaceland, I Still Desired More; and What Came of It
  20. Chapter 25How the Sphere Encouraged Me in a Vision
  21. Chapter 26XXI: How I Tried to Teach the Theory of Three Dimensions to My Grandson, and with What Success
  22. Chapter 27XXII: How I Then Tried to Diffuse the Theory of Three Dimensions by Other Means, and of the Result
  23. Chapter 28Endnotes
  24. Chapter 29List of Illustrations