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 119
O F two circles and I 1 touch one another internally, the right line joining theircentres, being produced, jliallpafs througha point of contact. For, if it be poffible, let … join their centres, and produce it bothways; from a point of contact draw 11 to the centre of f J , and from the fame pointof contadl draw •■■•■■•«• to the centre of I I. k Becaufe in +- (B. 1. pr. 20.), I ••!•••••, and O as they are radii of 88 BOOK III. PROP. XL THEOR. but —— -| ——— C —; take…
Geometry
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