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 Joseph Cushing, 1816 - 472 páginas |
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Página 14
... proportion : for and 100 % which in the decimal form we denote by .3 .03 and .003 , are frac tions , of which the first is ten times greater than the second ; and the second ten times greater than the third , 3 03 10 100 Hence it ...
... proportion : for and 100 % which in the decimal form we denote by .3 .03 and .003 , are frac tions , of which the first is ten times greater than the second ; and the second ten times greater than the third , 3 03 10 100 Hence it ...
Página 34
... sides a hexagon , & c . but if their sides are not equal to each other , then they are called irregular polygons ; as an irregular pentagon , hexagon , & c . 36. Four quantities are said to be in proportion when 34 GEOMETRY .
... sides a hexagon , & c . but if their sides are not equal to each other , then they are called irregular polygons ; as an irregular pentagon , hexagon , & c . 36. Four quantities are said to be in proportion when 34 GEOMETRY .
Página 35
... proportion when the product of the extremes is equal to that of the means : thus if A multiplied by D , be equal to B multiplied by C , then A is said to be to B as C is to D. POSTULATES OR PETITIONS . 1. That a right line may be drawn ...
... proportion when the product of the extremes is equal to that of the means : thus if A multiplied by D , be equal to B multiplied by C , then A is said to be to B as C is to D. POSTULATES OR PETITIONS . 1. That a right line may be drawn ...
Página 51
... Therefore , in general , the chord , sine , tan- gent , & c . of any arc is proportional to the radius of the circle ) the same way the chord AB is to the chord a b , in the same proportion . So AB : ab : THEOREMS . 51.
... Therefore , in general , the chord , sine , tan- gent , & c . of any arc is proportional to the radius of the circle ) the same way the chord AB is to the chord a b , in the same proportion . So AB : ab : THEOREMS . 51.
Página 52
... proportion . So AB : ab : : BC : bc : the same way the rest may be proved to be proportional . THEOREM XVII . If from a point A without a circle DBCE there be drawn two lines ADE , ABC , each of them cutting the circle in two points ...
... proportion . So AB : ab : : BC : bc : the same way the rest may be proved to be proportional . THEOREM XVII . If from a point A without a circle DBCE there be drawn two lines ADE , ABC , each of them cutting the circle in two points ...
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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 50 Dist ABCD acres altitude annexed Answer base bearing bisect blank line centre chains and links chord circle circumferentor Co-secant Secant Co-sine Co-tang column contained cyphers decimal decimal fraction Dep Lat difference 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 magnetical measure meridian distance multiplied needle number of degrees object off-sets parallel parallelogram perpendicular piece of ground plane Portmarnock PROB proportion protractor quotient radius right angles right line scale of equal SCHOLIUM sect semicircle side sights sine square root stationary distance sun's suppose survey taken tance Tang tangent thence theo theodolite THEOREM thro trapezium triangle ABC trigonometry true amplitude true azimuth two-pole chains vane variation whence