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 σελίδες |
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Σελίδα vi
... 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 neces- sary theorems and problems ; with the nature and use of the ...
... 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 neces- sary theorems and problems ; with the nature and use of the ...
Σελίδα 32
... taken , the sums or remainders are equal . 7. All right angles are equal to one another . 8. If two right angles not parallel , be produced to- wards their nearest distance , they will intersect each other . 9. Things which mutually ...
... taken , the sums or remainders are equal . 7. All right angles are equal to one another . 8. If two right angles not parallel , be produced to- wards their nearest distance , they will intersect each other . 9. Things which mutually ...
Σελίδα 37
... taken together . Viz . to B and A. fig . 23 . B A fig . 23 . E Ņ 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 ...
... taken together . Viz . to B and A. fig . 23 . B A fig . 23 . E Ņ 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 ...
Σελίδα 44
... ABE- CDF ( by theo . 6 ) let the triangle . CKE be taken from both , and we will have the trapezeum ABKC = KD FE ; to each of these add the triangle BKD , then the parallelogram ABCD = BDEF ; in like manner we 44 THEOREMS .
... ABE- CDF ( by theo . 6 ) let the triangle . CKE be taken from both , and we will have the trapezeum ABKC = KD FE ; to each of these add the triangle BKD , then the parallelogram ABCD = BDEF ; in like manner we 44 THEOREMS .
Σελίδα 49
... taken , which will also measure Bl ) : 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 Bl ) : 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 Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2021 |
Συχνά εμφανιζόμενοι όροι και φράσεις
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