A graduated course of problems in practical plane and solid geometry |
Inni boken
Resultat 11-15 av 43
Side 214
... projection , by being moved through the arc AD ' . We thus have this practical rule for finding the real length of a line , whose projections are given - viz . , upon the given horizontal projection construct a right - angled triangle ...
... projection , by being moved through the arc AD ' . We thus have this practical rule for finding the real length of a line , whose projections are given - viz . , upon the given horizontal projection construct a right - angled triangle ...
Side 215
... the conditions given . Now as A and D ' are the traces of a line in space , its projections can be found by Pr . 21. Hence , draw D'D at right angles to xy , and join AD ; then AD is the horizontal projection PRACTICAL SOLID GEOMETRY . 215.
... the conditions given . Now as A and D ' are the traces of a line in space , its projections can be found by Pr . 21. Hence , draw D'D at right angles to xy , and join AD ; then AD is the horizontal projection PRACTICAL SOLID GEOMETRY . 215.
Side 217
... projection . Now this third plane will cut the given planes in two straight lines , which will be parallel to each other ; for if two parallel planes be cut by another plane , their common sections with it are parallel . The plane CD ...
... projection . Now this third plane will cut the given planes in two straight lines , which will be parallel to each other ; for if two parallel planes be cut by another plane , their common sections with it are parallel . The plane CD ...
Side 223
... projection . Let AB and AC be the traces of the given plane . It is required to find the angles which it makes with the planes of projection . First , draw any line ED at right angles to PRACTICAL SOLID GEOMETRY . 223.
... projection . Let AB and AC be the traces of the given plane . It is required to find the angles which it makes with the planes of projection . First , draw any line ED at right angles to PRACTICAL SOLID GEOMETRY . 223.
Side 224
... projection of EG , and since the line and its projection are drawn 18 8 y from the same point E , which is common to the horizontal plane and the given plane , it follows that GED is the angle which the plane makes with the horizontal ...
... projection of EG , and since the line and its projection are drawn 18 8 y from the same point E , which is common to the horizontal plane and the given plane , it follows that GED is the angle which the plane makes with the horizontal ...
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
Populære avsnitt
Side 295 - Philips' Preparatory Atlas, Containing Sixteen Maps, full colored. Crown quarto, in neat cover, 6d. Philips Preparatory Outline Atlas. Sixteen Maps. Crown quarto, printed on fine cream-wove paper, in neat cover, 6d. Philips Preparatory Atlas of Blank Projections. Sixteen Maps. Crown quarto, printed on fine cream-wove paper, in neat cover, 6d. Philips Elementary Atlas for Young Learners.
Side 294 - Young Student's Atlas, Comprising Thirty-six Maps of the Principal Countries of the World, printed in colors. Edited by W. Hughes, FRGS Imperial 41.0., bound in cloth, 33. 6d. Philips Atlas for Beginners, Comprising Thirty-two Maps of the Principal Countries of the World, constructed from the best authorities, and engraved in the best style. New and enlarged edition, with a valuable Consulting Index, on a new plan.
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.