Euclid's Elements, Book I, Definitions 11 and 12

Euclid's Elements, Book III, Proposition 1

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Euclid's Elements by Euclid

Oliver Byrne: The Matisse of Mathematics - Byrne's Euclid

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Euclid's Elements: Euclid, Dana Densmore, T.L. Heath

Online table of contents for Euclid's Elements (Joyce, 1996; used

The definitions of Book 3 in Euclid's Elements.

Mathematical Treasure: Robert Simson's The Elements of Euclid

Finishing the work of Oliver Byrne and completing with his style - the thirteen books of Euclid's Elements.

Euclid's Elements. Completing Oliver Byrne's work