The Theory and Practice of Surveying: Containing All the Instructions Requisite for the Skilful Practice of this ArtEvert Duyckinck, 1814 - 508 σελίδες |
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Αποτελέσματα 1 - 5 από τα 42.
Σελίδα 43
... base perpen- dicularly thus if the triangle ABC , be propos- ed , and BC be made its base , then if from the vertex A the perpendicular AD be drawn to BC , the line AD will be the height of the triangle ABC , standing on BC as its base ...
... base perpen- dicularly thus if the triangle ABC , be propos- ed , and BC be made its base , then if from the vertex A the perpendicular AD be drawn to BC , the line AD will be the height of the triangle ABC , standing on BC as its base ...
Σελίδα 50
... base of the one BC , will be equal to EF , that of the other . - = If the triangle ABC be supposed to be laid on the triangle DEF , so as to make the points A and B coincide with D and E , which they will do , because AB DE ( by the ...
... base of the one BC , will be equal to EF , that of the other . - = If the triangle ABC be supposed to be laid on the triangle DEF , so as to make the points A and B coincide with D and E , which they will do , because AB DE ( by the ...
Σελίδα 55
... base AB , and between the same parallels with the parallelogram ABCD , is half the paral- lelogram . Cor . 3. It is ... bases and between the same parallels , are equal to one another , that is , if BD = GH , and the lines BH and AF ...
... base AB , and between the same parallels with the parallelogram ABCD , is half the paral- lelogram . Cor . 3. It is ... bases and between the same parallels , are equal to one another , that is , if BD = GH , and the lines BH and AF ...
Σελίδα 56
... base and perpendicular , will be the hypothenuse . Cor . 2. Having the hypothenuse and one side given to find the other ; the square root of the dif- ference of the squares of the hypothenuse and giv- ́en side , will be the required ...
... base and perpendicular , will be the hypothenuse . Cor . 2. Having the hypothenuse and one side given to find the other ; the square root of the dif- ference of the squares of the hypothenuse and giv- ́en side , will be the required ...
Σελίδα 58
... bases BA and BD . 1 Let any aliquot part of AB be taken , which will also measure BD : suppose that to be Ag , which will be contained twice in AB , and three times ... base , is to the " sum of those in the other , so will be 58 GEOMETRICAL.
... bases BA and BD . 1 Let any aliquot part of AB be taken , which will also measure BD : suppose that to be Ag , which will be contained twice in AB , and three times ... base , is to the " sum of those in the other , so will be 58 GEOMETRICAL.
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acres altitude Answer arch base bearing blank line centre chains and links circle circle of latitude circumferentor Co-sec Co-tang column compasses contained decimal Dep Lat Dep difference Dist divided divisions draw east Ecliptic edge EXAMPLE feet field-book figures fore four-pole chains geometrical series given number half the sum Horizon glass hypothenuse inches instrument Lat Dep Lat latitude length logarithm measure meridian distance multiplied Natural Co-sines natural sine Nonius number of degrees object observed off-sets opposite parallelogram perches perpendicular plane pole pole star PROB proportion protractor Quadrant quotient radius right angles right line scale of equal SCHOLIUM screw Secant sect semicircle Sextant side sights square root station stationary distance subtracted survey taken Tang tangent theo theodolite trapezium triangle ABC trigonometry vane versed sine vulgar fraction