From Citizendium, the Citizens' Compendium
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- Euclid., Casey, John. The First Six Books of the Elements of Euclid (1885) full text of first six books with exercises (in English)
- Euclid., Todhunter, Isaac. The Elements of Euclid For the Use of Schools and Colleges: Comprising the first Six books and portions of the Eleventh and twelfth books WITH NOTES, AN APPENDIX, AND EXERCISES (1896) wikisource edition (in English)