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The first six books of the Elements of Euclid, in which coloured diagrams and symbols are used instead of letters .. (1847)

Euclid, Byrne, Oliver · London, W. Pickering · leaf 137

An illustration from The first six books of the Elements of Euclid, in which coloured diagrams and symbols are used instead of letters .., 1847, leaf 137
BOOK III. PROP. XX. THEOR. 103 _i_ 4 + + = twke 4 Hence But ^f = 4 + V 9 and twice FIGURE III. FIGURE III. … ▲ ZZ twice Q. E. D.

Geometry

Internet Archive · Fisher - University of Toronto · Public domain (published before 1931). Free to use for anything.

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