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 393
ed ly the undivided Line , and each Segment of the divided Line * If Z = A - j - E , by Supposition , Sd 11 ZE = AE + Eq Multiplication . Proposition IV . If a Right Line he divided at pleasure , the Square which is described on the Whole If Z — A 4 - E + I by Supposition , % * ipUedbyB . Line is… … If Z = A + E } by supposition , , Proposition III . a Right Line le divided at pleasure , the Aq - f - AE e ang e comprehended ly the Whole and AE - f - Eq ns e £ , me nt , is equal to the Rectangle of Zq — Aq ^ rAE ^ Eq by Multiplication . Propo -
e-rara · ETH-Bibliothek · No known copyright restrictions. Free to use for anything.
