Cursus mathematicus. Mathematical sciences : in nine books : comprehending arithmetick, geometry, cosmography, astronomy, navigation, trigonometry, with the description, construction, and use of geometrical and nautical instruments: and the doctrine of triangles applied to practice in mensurations of all kinds: as in longimetria, planometria, military architecture, or taking of heights, distances &c. surveying of land, woods, roads, &c. fortification. And in navigation, dialling, &c. : all which are disposed in such method and order as they ought to be read and practised, by such as would attain to a competent proficiency in them by their own industry (1690)
Leybourn, William · printed for Thomas Basset, Benjamin Tooke, Thomas Sawbridge, Awnsham and John Churchill · leaf 62
Book I . Cursus Mathematicus . 40 § VII . Division of Fractions demonstrated . In Fractions divided the Quotient will be greater than the Terms given ; and the Di visor propounded may be greater or left than the Dividend . , as will appear , they being in this Proportion : As the Divisor of any… … Foot , or 24 Inches ; so 2 will be contained in 2 once , or 24 in 24 also once : and so t divided by f will be } , or One : And consequently in all Fractions , ( as in Integers , ) when the Divisor is equal to the Dividend , whether the Fraction be in Numbers , Lines , or Geometrical Figures , the…
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