Biography.com: Euclides of Megara
A life in one paragraph.
Eucleides
Brief biography, from a workstation named after this ancient Greek philosopher.
Euclides
Article from the Internet Encyclopedia of Philosophy, describing this classical thinker's career.
Life of Euclides
From the C.D. Yonge translation of Diogenes Laertius, made available through Peitho's Web.