A complete treatise on practical land-surveying1870 |
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Página 18
... ; the angle BDC is double of the angle BAC ( Euc . iii . 20 ; Simp . iii . 10 ; Em . iv . 12 ) . B A D E THEOREM IX . B Let ABC be a semicircle ; 18 PART I. LAND - SURVEYING . To raise a perpendicular by a scale of equal parts.
... ; the angle BDC is double of the angle BAC ( Euc . iii . 20 ; Simp . iii . 10 ; Em . iv . 12 ) . B A D E THEOREM IX . B Let ABC be a semicircle ; 18 PART I. LAND - SURVEYING . To raise a perpendicular by a scale of equal parts.
Página 19
... of their homologous sides ( Euc . vi . 19 ; Simp . c iv . 24 ; Em . ii . 18 ) . D K B C THEOREM XIV . In any triangle ABC , double the PART I. 19 GEOMETRICAL THEOREMS . 19 To make a right angle by the line of chords on the plane scale.
... of their homologous sides ( Euc . vi . 19 ; Simp . c iv . 24 ; Em . ii . 18 ) . D K B C THEOREM XIV . In any triangle ABC , double the PART I. 19 GEOMETRICAL THEOREMS . 19 To make a right angle by the line of chords on the plane scale.
Página 20
Anthony Nesbit William Burness. THEOREM XIV . In any triangle ABC , double the square of a line CD , drawn from the vertex to the middle of the base AB , together with double the square of half the base AD or BD , is equal to the sum of ...
Anthony Nesbit William Burness. THEOREM XIV . In any triangle ABC , double the square of a line CD , drawn from the vertex to the middle of the base AB , together with double the square of half the base AD or BD , is equal to the sum of ...
Página 21
... double . When you wish to unfold it , take both the handles in your left hand , and the other part of the chain in your right ; then throw it from you , taking care to keep hold of the handles . You must then adjust the links before you ...
... double . When you wish to unfold it , take both the handles in your left hand , and the other part of the chain in your right ; then throw it from you , taking care to keep hold of the handles . You must then adjust the links before you ...
Página 25
... Double fountain - bottles , such as are used by excise officers , are the best . DIRECTIONS TO YOUNG SURVEYORS WHEN IN THE FIELD , & c . In addition to the instruments already described , you must pro- vide ten arrows , each about a ...
... Double fountain - bottles , such as are used by excise officers , are the best . DIRECTIONS TO YOUNG SURVEYORS WHEN IN THE FIELD , & c . In addition to the instruments already described , you must pro- vide ten arrows , each about a ...
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Términos y frases comunes
acres allotment Area 7a base base-line centre chain chain-line circumferentor Commissioners compass constructed the figure convenient cross cross-staff curve cutting diag diagonal direction distance ditto divided Double areas Draw a line Draw the line embankments equal erect the perpendicular Examples feet fences field field-book find its area find the area find the perpendicular following dimensions following notes given gonal ground hill horizontal hypotenusal inches inclosure Indian ink insets Lay the ruler learner length line BC main-line manner mark the temporary measure method move it parallel Offsets taken parallel ruler perches plan and area plane Plate plotting-scale PROBLEM proof-line quadrant radius railway range range W rectangle rhombus right angles right line right-angled triangle river scale scalene triangle side sine slopes square links station surface survey surveyor tangent temporary line theodolite trapezium ABCD trapezoid triangle ABC trigonometry Valuer whole width
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