Although best-known for its geometric results, the Elements also includes various results in number theory, such as the connection between perfect numbers and Mersenne primes.
Euclid also wrote works on perspective, conic sections, spherical geometry, and possibly quadric surfaces. Neither the year nor place of his birth have been established, nor the circumstances of his death.
More on [ Euclid ]

Byrne's Edition of Euclid - Oliver Byrne's edition of Euclid with colours used instead of labels. A beautiful piece of artwork.
Euclid Elements - the Perseus Project - Pages giving the full Heath text of Euclid's Elements, together with the Greek text.
Euclid Forum Frigate - Discussion forum and live chat devoted to Euclid's life and works.
Meta Description: [ Euclid Discussion Deck. ]
Euclid in Verse - A proof of one of Euclid's theorems in verse, by Samuel Taylor Coleridge.
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Euclid of Alexandria - The Elements as a hypertext.
Euclid's Elements - Welcome to the Platonic Solids as Demonstrated in Book Thirteen of Euclid's Elements.
Euclid's Elements - Joyce's Java version - This dynamically illustrated edition of Euclid's Elements includes 13 books on plane geometry, geometric and abstract algebra, number theory, incommensurables, and solid geometry.
Meta Description: [ This dynamically illustrated edition of Euclid's Elements includes
13 books on plane geometry, geometric and abstract algebra, number theory, incommensurables, and
solid geometry. ]
Introduction to the Works of Euclid - With an Emphasis on the Elements. By Donald Lancon, Jr. (student).
Introduction to the Works of Euclid - An essay on the Elements (by Don Allen).
The Visual Elements of Euclid - New edition of the text of Heath, transformed into an extensively illustrated edition.
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