The Theory and Practice of Surveying: Containing All the Instructions Requisite for the Skilful Practice of this Art. With a New Set of Accurate Mathematical TablesHarper, 1832 - 348 σελίδες |
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Αποτελέσματα 1 - 5 από τα 16.
Σελίδα 61
... lines A and B. Draw two indefinite blank lines CE , CD anywise to make any angle . Lay the line A from C to F , and the line B from C to G , and draw the line FG ; lay again the line A from C to H , and through H draw HI parallel to FG ...
... lines A and B. Draw two indefinite blank lines CE , CD anywise to make any angle . Lay the line A from C to F , and the line B from C to G , and draw the line FG ; lay again the line A from C to H , and through H draw HI parallel to FG ...
Σελίδα 62
... line AB in the point E , so that AE shall have the same proportion to EB as two given lines C and D have . Draw an indefinite blank line AF to the extremity of the line AB , to make with it any angle ; lay the line C from A to C , and D ...
... line AB in the point E , so that AE shall have the same proportion to EB as two given lines C and D have . Draw an indefinite blank line AF to the extremity of the line AB , to make with it any angle ; lay the line C from A to C , and D ...
Σελίδα 77
... line of longitudes . The line of longitudes is a line . divided into sixty ... lines of tangents , semitangents and secants serve to find the centres and ... blank side represents the diameter of a circle . The side of the protractor ...
... line of longitudes . The line of longitudes is a line . divided into sixty ... lines of tangents , semitangents and secants serve to find the centres and ... blank side represents the diameter of a circle . The side of the protractor ...
Σελίδα 89
... blank lines , as before . From a scale of equal parts lay 190 from A to B , on the point B erect a perpendicular BC ( by prob . 5 , sect . 4 ) , the point where this cuts the other blank line of the angle will be C ; so is the triangle ...
... blank lines , as before . From a scale of equal parts lay 190 from A to B , on the point B erect a perpendicular BC ( by prob . 5 , sect . 4 ) , the point where this cuts the other blank line of the angle will be C ; so is the triangle ...
Σελίδα 92
... blank lines ( by prob . 16 , sect . 4 ) ; with BC 170 from a line of equal parts draw the lines EF parallel to AB ( by prob . 8 , sect . 4 ) , the lower line of the angle , and from the point where it cuts the other line in C let fall a ...
... blank lines ( by prob . 16 , sect . 4 ) ; with BC 170 from a line of equal parts draw the lines EF parallel to AB ( by prob . 8 , sect . 4 ) , the lower line of the angle , and from the point where it cuts the other line in C let fall a ...
Άλλες εκδόσεις - Προβολή όλων
Συχνά εμφανιζόμενοι όροι και φράσεις
ABCD acres altitude arch azimuth base bearing blank line centre chains and links circle circumferentor co-sine column compasses contained cube root decimal diagonal diameter difference of latitude divided divisions divisor draw east ecliptic edge EXAMPLE feet field-book figure four-pole chains geometrical series given angle given number half the sum height Hence horizon glass hypothenuse inches instrument length logarithm manner measure meridian distance method multiplied needle nonius number of degrees object observed offsets opposite parallelogram perches perpendicular plane prob PROBLEM proportion protractor quadrant quotient radius rhombus right angles right line scale of equal SCHOLIUM screw secant sect sector semicircle side square root station stationary distance subtract suppose survey taken tangent theo theodolite THEOREM third trapezium triangle ABC trigonometry two-pole chains vane vulgar fraction whence
Δημοφιλή αποσπάσματα
Σελίδα 173 - In like manner, when it is said, that " triangles on the same base, and between the same parallels, are equal...
Σελίδα 49 - 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.
Σελίδα 163 - RULE. From half the sum of the three sides subtract each side severally.
Σελίδα 41 - 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.
Σελίδα 97 - 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.
Σελίδα 41 - The radius of a circle is a right line drawn from the centre to the circumference.
Σελίδα 52 - Triangles upon equal bases, and between the same parallels, are equal to one another.
Σελίδα 24 - The square of the sum of two numbers is equal to the square of the first number plus twice the product of the first and second number plus the square of the second number.
Σελίδα 35 - DIVISION BY LOGARITHMS. RULE. From the logarithm of the dividend subtract the logarithm of the divisor, and the number answering to the remainder will be the quotient required.