A graduated course of problems in practical plane and solid geometry |
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Página v
... . INSCRIBED FIGURES 87 VIII . DESCRIBED FIGURES IX . PROPORTIONALS X. SIMILAR FIGURES 115 124 131 XI . EQUIVALENT AREAS 137 XII . MISCELLANEOUS PROBLEMS 167 XIII . SCALES . 181 SECTION PRACTICAL SOLID GEOMETRY . I. DEFINITIONS , & c.
... . INSCRIBED FIGURES 87 VIII . DESCRIBED FIGURES IX . PROPORTIONALS X. SIMILAR FIGURES 115 124 131 XI . EQUIVALENT AREAS 137 XII . MISCELLANEOUS PROBLEMS 167 XIII . SCALES . 181 SECTION PRACTICAL SOLID GEOMETRY . I. DEFINITIONS , & c.
Página x
... Scale . 11. Scale of Chords . NOTE . For a description of the last two instruments , see pages 182 and 183 respectively . HINTS ON THE MANNER OF USING DRAWING INSTRUMENTS . 1. X INTRODUCTORY SECTION .
... Scale . 11. Scale of Chords . NOTE . For a description of the last two instruments , see pages 182 and 183 respectively . HINTS ON THE MANNER OF USING DRAWING INSTRUMENTS . 1. X INTRODUCTORY SECTION .
Página xii
... scale as convenient , as the larger the scale , the more correct , generally speaking , is the solution . Straight lines and arcs should always be drawn sufficiently long at first , as you cannot produce a line , or continue an arc ...
... scale as convenient , as the larger the scale , the more correct , generally speaking , is the solution . Straight lines and arcs should always be drawn sufficiently long at first , as you cannot produce a line , or continue an arc ...
Página 182
... scales are called " decimal scales . " Diagonal Scale . - A diagonal_scale is a scale used for measuring more minute distances than can be done by an ordinary plain scale . It is usually divided into 100ths . A 987654321 B C 9 8 4321E 7 ...
... scales are called " decimal scales . " Diagonal Scale . - A diagonal_scale is a scale used for measuring more minute distances than can be done by an ordinary plain scale . It is usually divided into 100ths . A 987654321 B C 9 8 4321E 7 ...
Página 183
... Scale of Chords . — A scale of chords is a scale by means of which , instead of a protractor or geometrical construction , angles of any number of degrees can be measured or constructed . When marked on a flat protractor , it is usually ...
... Scale of Chords . — A scale of chords is a scale by means of which , instead of a protractor or geometrical construction , angles of any number of degrees can be measured or constructed . When marked on a flat protractor , it is usually ...
Términos y frases comunes
altitude angles to xy Atlas axis base BC Pr Bisect the angle bound in cloth circumference cone construct a triangle cube curve cylinder decagon describe a circle describe an arc describe the arc diameter BC distance divide draw a line draw a tangent draw lines edge ellipse equal circles equal in area equilateral triangle given circle given line given point given square ABCD given straight line given triangle ABC heptagon horizontal plane hyperbola inclined inscribe intersection isosceles triangle Join line BC line CD line of bisection lines parallel Maps mean proportional meeting number of equal octahedron parallel to xy parallelogram pentagon perpendicular to xy Philips plan and elevation PLANE GEOMETRY plane of projection point F points of division prism Problem projectors pyramid radii radius rectangle rectilineal figure regular polygon represent required circle rhombus right angles semicircle SOLID GEOMETRY square pyramid trapezium vertical plane
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Página 193 - A cone is a solid figure described by the revolution of a right-angled triangle about one of the sides containing the right angle, which side remains fixed. If the fixed side be equal to the other side containing the right angle, the cone is called a right-angled cone ; if it be less than the other side, an obtuse-angled ; and if greater, an acute-angled cone. XIX. The axis of a cone is the fixed straight line about which the triangle revolves.
Página 123 - A straight line is said to be cut in extreme and mean ratio, when the whole is to the greater segment as the greater segment is to the less.