A Treatise on Practical Surveying: Which is Demonstrated from Its First Principles : Wherein Every Thing that is Useful and Curious in that Art, is Fully Considered and ExplainedF. Lucas, jun. and Cushing & Jewett, J. Robinson printer, 1822 - 326 páginas |
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Página 10
... 3 .03 and .003 , are fractions , of which the first is ten times greater than the second ; and the second ten times greater than the third . 1000 03 Hence it appears that as the value and denomina- tion 10 DECIMAL FRACTIONS .
... 3 .03 and .003 , are fractions , of which the first is ten times greater than the second ; and the second ten times greater than the third . 1000 03 Hence it appears that as the value and denomina- tion 10 DECIMAL FRACTIONS .
Página 11
... Hence it appears that as the value and denomina- tion of any figure or numbers of figures in common arithmetic is enlarged , and becomes ten or an hun- dred , or a thousand times greater , by placing one , or two , or three cyphers ...
... Hence it appears that as the value and denomina- tion of any figure or numbers of figures in common arithmetic is enlarged , and becomes ten or an hun- dred , or a thousand times greater , by placing one , or two , or three cyphers ...
Página 29
... Hence all triangles between the same parallels have the same height , since all the perpendiculars are equal from the nature of parallel lines . 28. Any figure of four sides is called a quadri- lateral figure . 29. Quadrilateral figures ...
... Hence all triangles between the same parallels have the same height , since all the perpendiculars are equal from the nature of parallel lines . 28. Any figure of four sides is called a quadri- lateral figure . 29. Quadrilateral figures ...
Página 37
... A + B + ACB = 2 right angles . Q. E. D. Cor . 1. Hence if one angle of a triangle be known , the sum of the other two is also known ; for since the three angles of every triangle contain two right ones , THEOREMS . 37.
... A + B + ACB = 2 right angles . Q. E. D. Cor . 1. Hence if one angle of a triangle be known , the sum of the other two is also known ; for since the three angles of every triangle contain two right ones , THEOREMS . 37.
Página 39
... Hence if from any point in a perpendicular which besects in a given line , there be drawn right lines to the extremities of the given one , they with it will form an isosceles triangle . THEOREM VII . The angle BCD at the centre of a ...
... Hence if from any point in a perpendicular which besects in a given line , there be drawn right lines to the extremities of the given one , they with it will form an isosceles triangle . THEOREM VII . The angle BCD at the centre of a ...
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A Treatise of Practical Surveying: Which is Demonstrated From Its First ... Robert Gibson Sin vista previa disponible - 2021 |
Términos y frases comunes
20 perches ABCD acres altitude Answer base bearing blank line centre chains and links chord circle circumferentor Co-secant co-sine Co-tang column compass contained cyphers decimal decimal fraction difference Dist divided divisor draw east edge EXAMPLE feet field-book figures four-pole chains given angle half the sum height Hence hypothenuse inches instrument latitude length logarithm measure meridian distance multiplied needle number of degrees object off-sets opposite parallel parallelogram perpendicular piece of ground plane polygon Portmarnock PROB proportion protractor quotient radius right angles right line scale of equal SCHOLIUM secant second station sect semicircle side sights sine square root stationary distance stationary line sun's suppose survey taken tang tangent thence theo theodolite THEOREM thro triangle ABC trigonometry true amplitude true azimuth two-pole chains vane variation whence