The Theory and Practice of Surveying: Containing All the Instructions Requisite for the Skilful Practice of this ArtJ.J. Harper, 1828 - 435 páginas |
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Página 38
... angle , as ABC . Note , When an angle is expressed by three letters , the middle one is that at the angular point . 9. When the lines that form the angle are right ones , it is then called a right - lined angle , as ABC , fig . 4. If ...
... angle , as ABC . Note , When an angle is expressed by three letters , the middle one is that at the angular point . 9. When the lines that form the angle are right ones , it is then called a right - lined angle , as ABC , fig . 4. If ...
Página 39
... right line drawn from one end of an arc or arch ( that is , any part of the ... angles , and thus the periphery is divided into four equal parts , as BD ... right sine and the circumference : thus LB is the versed sine of the arc HB . fig ...
... right line drawn from one end of an arc or arch ( that is , any part of the ... angles , and thus the periphery is divided into four equal parts , as BD ... right sine and the circumference : thus LB is the versed sine of the arc HB . fig ...
Página 40
... right - lined angle , is the arc of a circle swept from the angular point , and contained between the two lines that form the angle : thus the angle HCB ( fig . 8. ) . is measured by the arc HB , and is said to contain so many degrees ...
... right - lined angle , is the arc of a circle swept from the angular point , and contained between the two lines that form the angle : thus the angle HCB ( fig . 8. ) . is measured by the arc HB , and is said to contain so many degrees ...
Página 41
... right and partly curved lines , it is called a mixed figure . 32. The most ... angles . 33. In respect to its sides it is either equilateral , having the ... angles , it is either right - angled , having one right angle , as D. fig . 13 ...
... right and partly curved lines , it is called a mixed figure . 32. The most ... angles . 33. In respect to its sides it is either equilateral , having the ... angles , it is either right - angled , having one right angle , as D. fig . 13 ...
Página 42
... angles to others given , be granted as possible : that it is possible for one right line to be perpendicular to another , at a given point or distance ; and that every magnitude has its half , third , fourth , & c . part . Note , Though ...
... angles to others given , be granted as possible : that it is possible for one right line to be perpendicular to another , at a given point or distance ; and that every magnitude has its half , third , fourth , & c . part . Note , Though ...
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Términos y frases comunes
ABCD acres altitude Answer arch base bearing centre chains and links circle circumferentor Co-sec Co-tang column compasses contained cube root decimal difference of latitude Dist divided divisions divisor draw east Ecliptic edge EXAMPLE feet field-book figure four-pole chains given angle given number half the sum height Hence Horizon glass hypothenuse inches instrument length logarithm measure Meridian Altitude meridian distance method multiplied natural co-sine natural number natural sine Nonius number of degrees object observed off-sets opposite parallel parallelogram perches perpendicular plane prob PROBLEM proportional protractor Quadrant quotient radius rhombus right angles right line Secant sect semicircle Sextant side square root station subtract Sun's survey taken Tang tangent theo theodolite THEOREM trapezium triangle ABC trigonometry two-pole chains vane versed sine vulgar fraction whence