A Treatise on Surveying,: Containing the Theory and Practice: : to which is Prefixed a Perspicuous System of Plane Trigonometry. : The Whole Clearly Demonstrated and Illustrated by a Large Number of Appropriate Examples. : Particularly Adapted to the Use of SchoolsKimber and Sharpless, no. 93, Market Street, and John Richardson, no. 244, Market Street., 1820 - 206 páginas |
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Página 25
A plane rectilineal angle is the inclination of two straight lines to one another , which meet together , but are not in the same straight line , as A , Fig . 1 . Note.- When several angles are formed about the same point , as at B ...
A plane rectilineal angle is the inclination of two straight lines to one another , which meet together , but are not in the same straight line , as A , Fig . 1 . Note.- When several angles are formed about the same point , as at B ...
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When a straight line stands on another straight line , so as to incline to neither side , but makes the angles on each side equal , then each of those angles is called a right angle and the line which stands on the other is said to be ...
When a straight line stands on another straight line , so as to incline to neither side , but makes the angles on each side equal , then each of those angles is called a right angle and the line which stands on the other is said to be ...
Página 27
An obtuse angled triangle has one obtuse angle , as C , Fig . 10 . 20. An acute angled triangle has all its angles acute , as ABC , Fig . 6 . ... A parallelogram , whose angles are all right angles , is called a rectangle , as E , Fig .
An obtuse angled triangle has one obtuse angle , as C , Fig . 10 . 20. An acute angled triangle has all its angles acute , as ABC , Fig . 6 . ... A parallelogram , whose angles are all right angles , is called a rectangle , as E , Fig .
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At a given point B , in a given right line LG , to make an angle equal to a given angle A , Fig . 23 . With the centre A and any distance AE , describe the arc DE , and with the same distance and centre B describe the arc FG ; make HG ...
At a given point B , in a given right line LG , to make an angle equal to a given angle A , Fig . 23 . With the centre A and any distance AE , describe the arc DE , and with the same distance and centre B describe the arc FG ; make HG ...
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Draw the indefinite right line AP , making an angle with AB , also draw BQ parallel to AP , in each of which ... Draw eleven lines parallel to , and equidistant from each other ; cut them at right angles by the equidistant lines BC ...
Draw the indefinite right line AP , making an angle with AB , also draw BQ parallel to AP , in each of which ... Draw eleven lines parallel to , and equidistant from each other ; cut them at right angles by the equidistant lines BC ...
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ABCD ABFD acres adjacent adjacent angles angle ABC angle opposite angled triangle base bearing and distance breadth Calculation centre Co-secant Co-sine Co-tang column decimal Deg Dist degrees DEMONSTRATION Dep Lat departure corresponding diff difference of latitude divide division line draw equal EXAMPLES feet figures find the angle find the area four-pole chains fourth term given angle given area given bearing given ratio given side John Gummere Lat Dep latitude and departure length logarithm measured meridian distance natural number off-sets parallel parallelogram perches perpendicular perpendicular BC quired quotient radius rectangle remainder Required the area right angle right line right-angled triangle RULE Secant semiperimeter side AB side AC sine square root station stationary line subtract survey tance Tang Tangent tract of land trapezium trapezoid triangle ABC trigonometry ܟܬ