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 27
... . That side upon which any parallelogram , or trian- gle is supposed to stand , is called the base ; and the per- pendicular falling thereon from the opposite angle is : called the altitude of the parallelogram , or triangle . GEOMETRY .
... . That side upon which any parallelogram , or trian- gle is supposed to stand , is called the base ; and the per- pendicular falling thereon from the opposite angle is : called the altitude of the parallelogram , or triangle . GEOMETRY .
Página 28
... base of the parallelogram ABEC , or triangle ABC , and CD is the altitude . Fig . 15 . 32. All plane figures contained under more than four sides , are called polygons ; of which those having five sides , are called pentagons ; those ...
... base of the parallelogram ABEC , or triangle ABC , and CD is the altitude . Fig . 15 . 32. All plane figures contained under more than four sides , are called polygons ; of which those having five sides , are called pentagons ; those ...
Página 43
... base of an isosceles triangle are equal to one another . 9. If one side of a triangle be produced , the external angle will be equal to the sum of the two internal and opposite angles : thus the external angle CBD , of the PLANE ...
... base of an isosceles triangle are equal to one another . 9. If one side of a triangle be produced , the external angle will be equal to the sum of the two internal and opposite angles : thus the external angle CBD , of the PLANE ...
Página 44
... base , that is , upon the same part of the circumference : thus the angle . BEC is double of the angle BAC . Fig . 38 . 11. The angles in the same segment of a circle are equal to one another : thus the angle BAD is equal to the angle ...
... base , that is , upon the same part of the circumference : thus the angle . BEC is double of the angle BAC . Fig . 38 . 11. The angles in the same segment of a circle are equal to one another : thus the angle BAD is equal to the angle ...
Página 46
... to 95 , the side BC . 2. In the right angled triangle ABC , are given the hypothenuse AC = 480 , and the angle A = 539 8. Το find the base AB and perpendicular BC . 1 From 90 ° subtract the angle A = 53 ° PLANE TRIGONOMETRY .
... to 95 , the side BC . 2. In the right angled triangle ABC , are given the hypothenuse AC = 480 , and the angle A = 539 8. Το find the base AB and perpendicular BC . 1 From 90 ° subtract the angle A = 53 ° PLANE TRIGONOMETRY .
Términos y frases comunes
ABCD ABFD acres adjacent adjacent angles angle ABC angle opposite angled triangle azimuth base bearing and distance breadth Calculation centre Co-secant Secant Co-sine Co-tang column decimal degrees DEMONSTRATION departure corresponding diff difference of latitude Dist 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 semiperimeter side AB side AC sine square root station stationary line subtract tance Tang Tangent tract of land trapezium trapezoid triangle ABC trigonometry