The Theory and Practice of Surveying: Containing All the Instructions Requisite for the Skilful Practice of this ArtJ.J. Harper, 1828 - 435 σελίδες |
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Σελίδα 41
... base , and the other two the sides . 40. The perpendicular height of a triangle is a line drawn from the vertex to the base perpendicularly : thus if the triangle ABC , be proposed , and BC be made its base , then if from the vertex A ...
... base , and the other two the sides . 40. The perpendicular height of a triangle is a line drawn from the vertex to the base perpendicularly : thus if the triangle ABC , be proposed , and BC be made its base , then if from the vertex A ...
Σελίδα 46
... 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 49
... base AB , and between the same parallels with the parallelogram ABCD , is half the parallelogram . Cor . 3. It is ... bases and between the same paralleis , 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 parallelogram . Cor . 3. It is ... bases and between the same paralleis , are equal to one another , that is , if BD = GH , and the lines BH and AF ...
Σελίδα 50
... 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 difference of the squares of the hypo- thenuse and given side , will be the required side ...
... 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 difference of the squares of the hypo- thenuse and given side , will be the required side ...
Σελίδα 51
... bases BA and BD . 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 in BD , the parts Ag , gB , Bh , hi , and i Ð being all * The arc BDC is ...
... bases BA and BD . 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 in BD , the parts Ag , gB , Bh , hi , and i Ð being all * The arc BDC is ...
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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