Part 1 - This World
Section 1 - Of the Nature of Flatland
Section 2 - Of the Climate and Houses in Flatland
Section 3 - Concerning the Inhabitants of Flatland
Section 4 - Concerning the Women
Section 5 - Of our Methods of Recognizing one another
Section 6 - Of Recognition by Sight
Section 7 - Concerning Irregular Figures
Section 8 - Of the Ancient Practice of Painting
Section 9 - Of the Universal Colour Bill
Section 10 - Of the Suppression of the Chromatic Sedition
Section 11 - Concerning our Priests
Section 12 - Of the Doctrine of our Priests
Part 2 - Other Worlds
Section 13 - How I had a Vision of Lineland
Section 14 - How I vainly tried to explain the nature of Flatland
Section 15 - Concerning a Stranger from Spaceland
Section 16 - How the Stranger vainly endeavoured to reveal to me in words the mysteries of Spaceland
Section 17 - How the Sphere, having in vain tried words, resorted to deeds
Section 18 - How I came to Spaceland, and what I saw there
Section 19 - How, though the Sphere shewed me other mysteries of Spaceland, I still desire more; and what came of it
Section 20 - How the Sphere encouraged me in a Vision
Section 21 - How I tried to teach the Theory of Three Dimensions to my Grandson, and with what success
Section 22 - How I then tried to diffuse the Theory of Three Dimensions by other means, and of the result