The Theory and Practice of Surveying: Containing All the Instructions Requisite for the Skilful Practice of this ArtE. Duyckinck, 1811 - 508 Seiten |
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Seite 4
... line , by themselves . Then , beginning at the right hand column of figures , add in the same manner as in whole num- bers , and put the decimal point , in the sum di- rectly beneath the other points . EXAMPLES . Add 4.7832 3.2543 ...
... line , by themselves . Then , beginning at the right hand column of figures , add in the same manner as in whole num- bers , and put the decimal point , in the sum di- rectly beneath the other points . EXAMPLES . Add 4.7832 3.2543 ...
Seite 37
... line has length but no breadth ; as AB . fi- gures 1 and 2 . 4. The extremities of a line are points , as the extremities of the line AB are the points A and B. figures 1 and 2 . 5. A right line is , the shortest that can be drawn ...
... line has length but no breadth ; as AB . fi- gures 1 and 2 . 4. The extremities of a line are points , as the extremities of the line AB are the points A and B. figures 1 and 2 . 5. A right line is , the shortest that can be drawn ...
Seite 38
... line AB to the line BC meeting each other in the point B , or the opening of the two lines BA and BC , is called an ... right ones , it is then called a right - lined angle , as ABC , fig . 4. If one of them be right and the other curved ...
... line AB to the line BC meeting each other in the point B , or the opening of the two lines BA and BC , is called an ... right ones , it is then called a right - lined angle , as ABC , fig . 4. If one of them be right and the other curved ...
Seite 39
... line from the centre to the circumference : whence all radii of the same or of equal circles are equal . 15. The diameter of a circle is a right line drawn thro ' the centre , and terminating in opposite points of the circumference ...
... line from the centre to the circumference : whence all radii of the same or of equal circles are equal . 15. The diameter of a circle is a right line drawn thro ' the centre , and terminating in opposite points of the circumference ...
Seite 40
... right sine of an arc , is a perpendicular line let fall from one end thereof , to a diameter drawn to the other end : thus HL is the right sine of the arc HB . The sines on the same diameter increase till they come to the centre , and ...
... right sine of an arc , is a perpendicular line let fall from one end thereof , to a diameter drawn to the other end : thus HL is the right sine of the arc HB . The sines on the same diameter increase till they come to the centre , and ...
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Häufige Begriffe und Wortgruppen
acres altitude Answer arch azimuth base bearing blank line centre chains and links chord circle circumferentor Co-sec Co-tang column compasses contained decimal difference distance line divided divisions draw east Ecliptic edge feet field-book figures fore four-pole chains geom given number half the sum Horizon glass hypothenuse inches instrument Lat Dep Lat latitude length logarithm measure meridian distance multiplied natural co-sine natural sine needle Nonius number of degrees object observed off-sets opposite parallel parallelogram pegs perches perpendicular plane pole pole star Portmarnock PROB protractor Quadrant quotient radius right angles right line scale of equal SCHOLIUM screw Secant sect Sextant side sights square station stationary distance subtract Sun's survey taken Tang tangent theo theodolite trapezium triangle ABC trigonometry two-pole chains vane versed sine vulgar fraction whence
Beliebte Passagen
Seite 38 - The angle in a semicircle is a right angle ; the angle in a segment greater than a semicircle is less than a right angle ; and the angle in a segment less than a semicircle is greater than a right angle.
Seite 25 - The circumference of every circle is supposed to be divided into 360 equal parts, called degrees ; and each degree into 60 equal parts, called minutes ; and each minute into 60 equal parts, called seconds ; and these into thirds, &c.
Seite 197 - RULE. From half the sum of the three sides subtract each side severally.
Seite 106 - C' (89) (90) (91) (92) (93) 112. In any plane triangle, the sum of any two sides is to their difference as the tangent of half the sum of the opposite angles is to the tangent of half their difference.
Seite 27 - The VERSED SINE of an arc is that part of the diameter which is between the sine and the arc. Thus BA is the versed sine of the arc AG.