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 páginas |
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Página 30
... right ones , it is then called a right - lined angle , as ABC . fig . 4. If one of them be right and the other ... angles ADC , CDB , on each side , equal to each other , these angles are called right angles , and the line CD a ...
... right ones , it is then called a right - lined angle , as ABC . fig . 4. If one of them be right and the other ... angles ADC , CDB , on each side , equal to each other , these angles are called right angles , and the line CD a ...
Página 31
... angles in general are called oblique angles . 14. If a right line CB , fig . 8. be fastened at the end C , and the other end B , be carried quite round , then the space comprehended is called a circle ; and the curve line described by ...
... angles in general are called oblique angles . 14. If a right line CB , fig . 8. be fastened at the end C , and the other end B , be carried quite round , then the space comprehended is called a circle ; and the curve line described by ...
Página 32
... right it is called a rectilineal figure , if curved it is called a curvilineal figure ; but if they be partly right and partly curved lines , it is called a mixt figure . 19. The most ... angled , having all the angles acute 32 GEOMETRY .
... right it is called a rectilineal figure , if curved it is called a curvilineal figure ; but if they be partly right and partly curved lines , it is called a mixt figure . 19. The most ... angled , having all the angles acute 32 GEOMETRY .
Página 34
... angles right , is call- ed a square , as ABCD . fig . 17 . 31. A parallelogram whose op- posite sides are equal and angles right , is called a rectangle or an ob- long , as ABCD , fig . 3 . 32. A rhombus is a parallelogram of equal ...
... angles right , is call- ed a square , as ABCD . fig . 17 . 31. A parallelogram whose op- posite sides are equal and angles right , is called a rectangle or an ob- long , as ABCD , fig . 3 . 32. A rhombus is a parallelogram of equal ...
Página 35
... angles to others given , be granted as possible : that it is possibly for one right line to be perpendicular to an- other , at a given point or distance ; and that every mag- nitude has its half , third , fourth , & c . part . Note ...
... angles to others given , be granted as possible : that it is possibly for one right line to be perpendicular to an- other , at a given point or distance ; and that every mag- nitude has its half , third , fourth , & c . part . Note ...
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A Treatise of Practical Surveying: Which is Demonstrated From Its First ... Robert Gibson Sin vista previa disponible - 2021 |
Términos y frases comunes
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