Field and Colliery Surveying: A Primer Designed for the Use of Students of Surveying and Colliery Manager AspirantsMacmillan & Company, 1911 - 263 páginas |
Dentro del libro
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Página viii
... TRIANGLES- The Trigonometrical Ratios Trigonometrical Tables explained The Right - angled Triangle Other Triangles · To find the Area of a Triangle Examples CHAPTER VI MEASUREMENTS- Units of Measurements Methods of Measuring THE Pacing ...
... TRIANGLES- The Trigonometrical Ratios Trigonometrical Tables explained The Right - angled Triangle Other Triangles · To find the Area of a Triangle Examples CHAPTER VI MEASUREMENTS- Units of Measurements Methods of Measuring THE Pacing ...
Página xi
... Triangles Casting by Equalising Casting by Ordinates Simpson's Rule The Planimeter Squared Paper Calculation of Earthwork , etc. The Produce of Coal Seams CHAPTER XVII PAGE 142 143 146 152 156 157 162 163 164 168 169 172 172 172 176 ...
... Triangles Casting by Equalising Casting by Ordinates Simpson's Rule The Planimeter Squared Paper Calculation of Earthwork , etc. The Produce of Coal Seams CHAPTER XVII PAGE 142 143 146 152 156 157 162 163 164 168 169 172 172 172 176 ...
Página 13
... triangle is the space enclosed by three straight lines . A right - angled triangle is that which has one СНАР . ІІІ 13 GEOMETRY.
... triangle is the space enclosed by three straight lines . A right - angled triangle is that which has one СНАР . ІІІ 13 GEOMETRY.
Página 14
... triangle is that which has one of its angles a right angle , as ABC ( Fig . 22 ) . The side AC opposite the FIG . 20 ... triangle has one of its angles obtuse , as Fig . 23 . A B C FIG . 22 . FIG . 23 . An acute - angled triangle has all ...
... triangle is that which has one of its angles a right angle , as ABC ( Fig . 22 ) . The side AC opposite the FIG . 20 ... triangle has one of its angles obtuse , as Fig . 23 . A B C FIG . 22 . FIG . 23 . An acute - angled triangle has all ...
Página 17
... triangle are together equal to two right angles . C V. If one side of a triangle be produced , III 17 GEOMETRY Theorems.
... triangle are together equal to two right angles . C V. If one side of a triangle be produced , III 17 GEOMETRY Theorems.
Términos y frases comunes
accuracy accurate acres adjusted alidade ascertain back-sight calculated centre chain line chord clamped clinometer coal colliery column commences compass box contour lines datum line dial difference direction distance division drawing drawn dumpy level equal error example fast needle feet Field Book figure fixed fore-sight frustum graduated Gunter's chain height horizontal hypothenuse inch inclination instrument isogonic lines legs length limb magnetic bearing magnetic declination magnetic meridian magnetic needle marked means measurements meridian angle meridian base line meridian line method necessary needle survey observation obtained offsets parallel parallel ruler perpendicular placed plotted pricker protractor radius reduced level right angles road ruler scale screw seam shaft shown by Fig side sight line sight vanes spirit level square station straight line surveyor taken taking telescope theodolite tie line traverse triangle true north underground survey vernier plate vernier reading yards zero
Pasajes populares
Página 22 - To draw a straight line at right angles to a given straight line, from a given point in the same.
Página 164 - Triangles on the same base, and between the same parallels, are equal.
Página 19 - Any two sides of a triangle are together greater than the third side.
Página 249 - A section of the strata sunk through, or, if that is not reasonably " practicable, a statement of the depth of the shaft with a section
Página 248 - Every such plan must be on a scale of not less than that of the Ordnance Survey of twenty-five inches to the mile, or on the same scale as the plan for the time being in use at the mine.
Página 16 - A diameter of a circle is a straight line drawn through the centre, and terminated both ways by the circumference.
Página 19 - When the three angles of one are equal to the three angles of the other, each to each, the adjoining diagram shews that the triangles need not be equal in all respects.
Página 12 - A plane superficies is that in which any two points being taken, the straight line between them lies wholly in that superficies.
Página 21 - To bisect a given finite straight line, that is, to divide it into two equal parts. Let AB be the given straight line; it is required to divide it into two equal parts.
Página 34 - We have, then, that the sine of an angle is equal to the cosine of its complement, and conversely.