A Treatise on Practical Surveying: Which is Demonstrated from Its First Principles, Wherein Every Thing that is Useful and Curious in that Art, is Fully Considered and ExplainedF. Lucas, Jun. and Joseph Cushing, 1816 - 472 σελίδες |
Αναζήτηση στο βιβλίο
Αποτελέσματα 1 - 5 από τα 45.
Σελίδα 33
... triangles , in all which any side may be called the base , and the other two the sides . 27. The perpendicular height of a triangle is a line drawn from the vertex to the base perpendicu- larly thus if the triangle ABC , be proposed ...
... triangles , in all which any side may be called the base , and the other two the sides . 27. The perpendicular height of a triangle is a line drawn from the vertex to the base perpendicu- larly thus if the triangle ABC , be proposed ...
Σελίδα 40
... angle will be equal to the internal and opposite one on the same side , that is , GEB = EFD and AEG - CFE . 4. And the sum of the internal angles on the same side , are equal to two right angles ... triangle ABC , one of 40 THEOREMS ..
... angle will be equal to the internal and opposite one on the same side , that is , GEB = EFD and AEG - CFE . 4. And the sum of the internal angles on the same side , are equal to two right angles ... triangle ABC , one of 40 THEOREMS ..
Σελίδα 41
... triangle ABC , one of its legs , as BC , being produced to- . wards D , it will make the external · angle ACD equal ... triangle ABC , all the three angles taken to- gether are equal to two right angles , viz , A + B + ACB = 2 right ...
... triangle ABC , one of its legs , as BC , being produced to- . wards D , it will make the external · angle ACD equal ... triangle ABC , all the three angles taken to- gether are equal to two right angles , viz , A + B + ACB = 2 right ...
Σελίδα 42
... angle : therefore 90 - one acute angle , gives the other . = THEOREM VI . If in any two triangles , ABC , DEF , there be two sides , AB , AC in the one , severally equal to DE , DF in the other , and the angle A contain- ed between the ...
... angle : therefore 90 - one acute angle , gives the other . = THEOREM VI . If in any two triangles , ABC , DEF , there be two sides , AB , AC in the one , severally equal to DE , DF in the other , and the angle A contain- ed between the ...
Σελίδα 43
... triangle a b c be equal to each other that is , ac = cb ; the angles which are opposite to those equal sides , will also be equal to each other ; viz . a = b . fig . 11 . fg . 11 . D C For let the triangle a b c be divided into two ...
... triangle a b c be equal to each other that is , ac = cb ; the angles which are opposite to those equal sides , will also be equal to each other ; viz . a = b . fig . 11 . fg . 11 . D C For let the triangle a b c be divided into two ...
Άλλες εκδόσεις - Προβολή όλων
A Treatise of Practical Surveying: Which is Demonstrated From Its First ... Robert Gibson Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2021 |
Συχνά εμφανιζόμενοι όροι και φράσεις
20 perches 50 Dist ABCD acres altitude annexed Answer base bearing bisect blank line centre chains and links chord circle circumferentor Co-secant Secant Co-sine Co-tang column contained cyphers decimal decimal fraction Dep Lat difference divided divisor draw east edge EXAMPLE feet field-book figures four-pole chains given angle half the sum height Hence hypothenuse inches instrument latitude length logarithm magnetical measure meridian distance multiplied needle number of degrees object off-sets parallel parallelogram perpendicular piece of ground plane Portmarnock PROB proportion protractor quotient radius right angles right line scale of equal SCHOLIUM sect semicircle side sights sine square root stationary distance sun's suppose survey taken tance Tang tangent thence theo theodolite THEOREM thro trapezium triangle ABC trigonometry true amplitude true azimuth two-pole chains vane variation whence