A graduated course of problems in practical plane and solid geometry |
Inni boken
Resultat 1-5 av 74
Side iii
... lines , representing those used in the construction of the figure ; and ( 3 ) thick lines , representing the solution of the problem . Moreover , the two cardinal ideas , viz . , what is given , and what is to be done , are by a.
... lines , representing those used in the construction of the figure ; and ( 3 ) thick lines , representing the solution of the problem . Moreover , the two cardinal ideas , viz . , what is given , and what is to be done , are by a.
Side v
... FIGURES 87 VIII . DESCRIBED FIGURES 115 · IX . PROPORTIONALS 124 X. SIMILAR FIGURES 131 XI . EQUIVALENT AREAS -137 XII . MISCELLANEOUS PROBLEMS 167 XIII . SCALES . 181 PRACTICAL SOLID GEOMETRY . SECTION PAGE I. DEFINITIONS , &
... FIGURES 87 VIII . DESCRIBED FIGURES 115 · IX . PROPORTIONALS 124 X. SIMILAR FIGURES 131 XI . EQUIVALENT AREAS -137 XII . MISCELLANEOUS PROBLEMS 167 XIII . SCALES . 181 PRACTICAL SOLID GEOMETRY . SECTION PAGE I. DEFINITIONS , &
Side vii
... figures , the most essential instruments are the compasses and the ruler . 1. The Compasses . - These are of various kinds , e.g. , we have ( 1 ) a pair of dividers , having two steel points . These are chiefly used for measuring ...
... figures , the most essential instruments are the compasses and the ruler . 1. The Compasses . - These are of various kinds , e.g. , we have ( 1 ) a pair of dividers , having two steel points . These are chiefly used for measuring ...
Side viii
... figure , GH represents a drawing - board . 5. The Set - Square . This is a triangular piece of wood ABC , having the edge BC at right angles to AB . It forms a cheap and convenient instrument for drawing perpendicular or parallel lines ...
... figure , GH represents a drawing - board . 5. The Set - Square . This is a triangular piece of wood ABC , having the edge BC at right angles to AB . It forms a cheap and convenient instrument for drawing perpendicular or parallel lines ...
Side ix
... figure in any required proportion . It consists H F A B of two brass legs , AB and CD , terminating at both ends with fine steel points , E , F , G , H. The legs turn on the pivot 0 , which may be adjusted so as to divide the length of ...
... figure in any required proportion . It consists H F A B of two brass legs , AB and CD , terminating at both ends with fine steel points , E , F , G , H. The legs turn on the pivot 0 , which may be adjusted so as to divide the length of ...
Vanlige uttrykk og setninger
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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Side 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.
Side 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.