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The first six books of the elements of Euclid, in which coloured diagrams and symbols are used instead of letters for the greater ease of learners (1847)

Byrne, Oliver, Whittingham, Charles, 1795-1876, Chiswick Press · London : William Pickering · leaf 118

An illustration from The first six books of the elements of Euclid, in which coloured diagrams and symbols are used instead of letters for the greater ease of learners, 1847, leaf 118 — more thwi two equal Jlraight lines can be drawn to the circumference^ thatpoint tnuji be the ceiitre of the circle. For, if it be fuppofed that the point |^in which more than two equal ftraightlines meet is not the centre, fome otherpoint —.. muft be; join thefe two points byand produce it both… … .; and fince from a point /\ w hich is not the centre, ftraight lines are drawn to the circumference; the greateft is -i^—.--= = ^ which pafies through the centre : and —^——— which is nearer to ^^■—••«. |^ ———~- which is more remote (B. 3. pr. 8.); but ———^— rr ^—^—=- (hyp.) which is abfurd. The…

Euclid's Elements · Geometry

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