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
... parallelogram , as D , Fig . 11 . 24. A parallelogram , whose angles are all right angles , is called a rectangle , as E. , Fig . 12 . 25. A parallelogram whose sides are all equal , and angles right , is called a square as F , Fig ...
... parallelogram , as D , Fig . 11 . 24. A parallelogram , whose angles are all right angles , is called a rectangle , as E. , Fig . 12 . 25. A parallelogram whose sides are all equal , and angles right , is called a square as F , Fig ...
Página 28
... parallelogram , or triangle . Thus AD is the 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 ...
... parallelogram , or triangle . Thus AD is the 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 ...
Página 86
... Parallelogram , whether it be a Square , a Rectangle , a Rhombus , or a Rhomboides . RULE . ✓ Multiply the length ... parallelogram of an equal length and perpendicular height ( 36.1 ) ; therefore the area of EXAMPLES . 1 ...
... Parallelogram , whether it be a Square , a Rectangle , a Rhombus , or a Rhomboides . RULE . ✓ Multiply the length ... parallelogram of an equal length and perpendicular height ( 36.1 ) ; therefore the area of EXAMPLES . 1 ...
Página 88
... product will be the area . * * DEMONSTRATION . A triangle is half a parallelogram of the same i ) EXAMPLES . 1. The base AB of a triangular base and altitude ( 41.1 . , ) and therefore the truth of the rule is evident . 88 MEASURING LAND .
... product will be the area . * * DEMONSTRATION . A triangle is half a parallelogram of the same i ) EXAMPLES . 1. The base AB of a triangular base and altitude ( 41.1 . , ) and therefore the truth of the rule is evident . 88 MEASURING LAND .
Página 99
... parallelograms ABCE , ABFD , and join ED , CF ; then because EC , DF , are each parallel and equal to AB , they are ( 30.1 . ) , parallel and equal to each other , and ( 33.1 . ) ECFD is a parallelogram ; therefore ABFD = ABHG + GHFD ...
... parallelograms ABCE , ABFD , and join ED , CF ; then because EC , DF , are each parallel and equal to AB , they are ( 30.1 . ) , parallel and equal to each other , and ( 33.1 . ) ECFD is a parallelogram ; therefore ABFD = ABHG + GHFD ...
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