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 σελίδες |
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Σελίδα 33
... nature of parallel lines . 28. Any figure of four sides is called a quadrilateral figure . 29. Quadrilateral figures whose opposite sides are parallel , are called 5 : parallelograms : thus ABCD is a parallelogram . fig . GEOMETRY . 33.
... nature of parallel lines . 28. Any figure of four sides is called a quadrilateral figure . 29. Quadrilateral figures whose opposite sides are parallel , are called 5 : parallelograms : thus ABCD is a parallelogram . fig . GEOMETRY . 33.
Σελίδα 34
... four sides are called polygons ; if the sides are all other , they are called regular polygons . times are named from the number of their sides , as a five - sided figure is called a pentagon , one of six sides a hexagon , & c . but if ...
... four sides are called polygons ; if the sides are all other , they are called regular polygons . times are named from the number of their sides , as a five - sided figure is called a pentagon , one of six sides a hexagon , & c . but if ...
Σελίδα 35
... Four quantities are said to be in 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 ...
... Four quantities are said to be in 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 ...
Σελίδα 37
... four quantities , A , B , C , D , are pro- portional , they are usually written thus , A : B :: C : D ; and read thus , as A is to B , so is C to D ; but when three quantities A , B , C , are proportional , the middle quantity is ...
... four quantities , A , B , C , D , are pro- portional , they are usually written thus , A : B :: C : D ; and read thus , as A is to B , so is C to D ; but when three quantities A , B , C , are proportional , the middle quantity is ...
Σελίδα 38
... made by these lines will be equal to two right angles . 2. And all the angles which can be made about a point , will be equal to four right angles . THEOREM II . If one right line cross another ( GEOMETRICAL THEOREMS. ...
... made by these lines will be equal to two right angles . 2. And all the angles which can be made about a point , will be equal to four right angles . THEOREM II . If one right line cross another ( GEOMETRICAL THEOREMS. ...
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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 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