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The elements of Euclid, with colored diagrams and symbols instead of letters
- ZeroGravitas 11y agoAlso re-issued recently for those who prefer physical books: http://www.amazon.com/Oliver-Byrne-First-Elements-Euclid/dp/3836544717 http://www.amazon.com/Oliver-Byrne-First-Elements-Euclid/dp/...