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 x
... taken to render the whole evident and familiar are as follow : In section the first , you have decimal fractions , the square root , geometrical definitions , some necessary theorems and problems ; with the nature and use of the tables ...
... taken to render the whole evident and familiar are as follow : In section the first , you have decimal fractions , the square root , geometrical definitions , some necessary theorems and problems ; with the nature and use of the tables ...
Página 36
... taken , the sums or remainders are unequal . 7. All right angles are equal to one another . 8. If two right lines not parallel , be produced to- wards their nearest distance , they will intersect each other . 9. Things which mutually ...
... taken , the sums or remainders are unequal . 7. All right angles are equal to one another . 8. If two right lines not parallel , be produced to- wards their nearest distance , they will intersect each other . 9. Things which mutually ...
Página 41
... taken together . Viz . to B and A. fig . 23 . fig . 23 . E Thro ' C , let CE be drawn parallel to AB ; then since BD cuts the two parallel lines BA , CE ; the angle ECD B ( by part 3. of the last theo . ) and again , since AC cuts the ...
... taken together . Viz . to B and A. fig . 23 . fig . 23 . E Thro ' C , let CE be drawn parallel to AB ; then since BD cuts the two parallel lines BA , CE ; the angle ECD B ( by part 3. of the last theo . ) and again , since AC cuts the ...
Página 48
... theo . 6. ) let the triangle CKE be taken from both , and we will have the trapezium ABKC = KDFE ; to each of these add the triangle BKD , then the parallelogram ABCD - BDEF ; in like manner we may prove 48 THEOREMS .
... theo . 6. ) let the triangle CKE be taken from both , and we will have the trapezium ABKC = KDFE ; to each of these add the triangle BKD , then the parallelogram ABCD - BDEF ; in like manner we may prove 48 THEOREMS .
Página 53
... taken , which will also measure BD : suppose that to be Ag , which will be contained twice in AB , and three times in BD , the parts Ag , gB , Bh , hi , and iD being all equal , and let the lines gC , hC , and iC , be drawn : then ( by ...
... taken , which will also measure BD : suppose that to be Ag , which will be contained twice in AB , and three times in BD , the parts Ag , gB , Bh , hi , and iD being all equal , and let the lines gC , hC , and iC , be drawn : then ( by ...
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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