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 7
... Circle Mensuration of An- 121 · 124 gles by these In- struments - The Protractor 2. Mensuration of heights - Of distances 3. Mensuration of Areas General Method Pennsylvania thod - 127 128 ples - Description of In- struments 232 236 3 ...
... Circle Mensuration of An- 121 · 124 gles by these In- struments - The Protractor 2. Mensuration of heights - Of distances 3. Mensuration of Areas General Method Pennsylvania thod - 127 128 ples - Description of In- struments 232 236 3 ...
Página 38
... circles are equal . 15. The diameter of a circle is a right line drawn through the centre , and terminating in opposite points of the circumference : and it divides the circle and circumference into two equal parts , called semicircles ...
... circles are equal . 15. The diameter of a circle is a right line drawn through the centre , and terminating in opposite points of the circumference : and it divides the circle and circumference into two equal parts , called semicircles ...
Página 39
... circle ) to the other ; and is the measure of the arc . Thus the right line HG , is the measure of the arc HBG . fig . 8 . 18. The segment of a circle is any part thereof , which is cut off by a chord thus the space which is ...
... circle ) to the other ; and is the measure of the arc . Thus the right line HG , is the measure of the arc HBG . fig . 8 . 18. The segment of a circle is any part thereof , which is cut off by a chord thus the space which is ...
Página 40
... 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 as the arc HB does ; so if the arc HB ...
... 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 as the arc HB does ; so if the arc HB ...
Página 42
... circle may be described . 4. It is also required that the equality of lines and 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 ...
... circle may be described . 4. It is also required that the equality of lines and 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 ...
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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