First Practical Lines of Geometrical Drawing ...Williams and Norgate, 1865 - 169 páginas |
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Página 7
... plane scale and number the distances of 147 88 176 81 and 55 공공 60 40 It is clear that these scales will also ... vertical lines . Subdivide the lower line GEOMETRICAL DRAWING . 7.
... plane scale and number the distances of 147 88 176 81 and 55 공공 60 40 It is clear that these scales will also ... vertical lines . Subdivide the lower line GEOMETRICAL DRAWING . 7.
Página 7
... plane scale and number the distances of 247 88 276 18 37 and 3 공공 It is clear that these scales will also enable ... vertical lines . Subdivide the lower line GEOMETRICAL DRAWING . 7.
... plane scale and number the distances of 247 88 276 18 37 and 3 공공 It is clear that these scales will also enable ... vertical lines . Subdivide the lower line GEOMETRICAL DRAWING . 7.
Página 71
... plane also often contains auxiliary planes showing the vertical sec- tions when any are required . The vertical plane is supposed to be standing at right angles with the horizontal plane , and contains the eleva- tions , showing the ...
... plane also often contains auxiliary planes showing the vertical sec- tions when any are required . The vertical plane is supposed to be standing at right angles with the horizontal plane , and contains the eleva- tions , showing the ...
Página 72
... vertical plane . The distance between the plan and the vertical plane is termed " region of space . " Lines drawn from any point of the plan or elevation , or to re- present the position of points in space , are always at right angles ...
... vertical plane . The distance between the plan and the vertical plane is termed " region of space . " Lines drawn from any point of the plan or elevation , or to re- present the position of points in space , are always at right angles ...
Página 73
... plane , and perpendicular to the vertical plane , will in the same manner determine its elevation or vertical trace . It will show the distance of h ' above the horizon , but this will not determine the distance from the vertical plane ...
... plane , and perpendicular to the vertical plane , will in the same manner determine its elevation or vertical trace . It will show the distance of h ' above the horizon , but this will not determine the distance from the vertical plane ...
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Términos y frases comunes
altitude angle of 30 angle of 45 axis base bisect centre circumference compass cone Construct a scale contours cube cylinder describe a circle describe the arc Descriptive Geometry determine the position diagonal scales diameter dihedral angle divided draw a line ellipse equal feet long forming an angle furlongs given line given point ground line height horizontal plane horizontal projection horizontal trace inch side inches edge inches high inches long isometric isometric projection join length miles oblique obtained parallel to x y parallelogram pendicular pentagon pentagonal pyramid perpendicular to x y perspective picture plane plane inclined planes of projection polygon primary division prism protractor pyramid radius ray of light representative fraction rhombus right angles sector shadow slope space square square pyramid straight line tangent tical tion versts vertical plane vertical projection vertical trace
Pasajes populares
Página 5 - If a side of any triangle be produced, the exterior angle is equal to the two interior and opposite angles ; and the three interior angles of every triangle are equal to two right angles.
Página 6 - If a straight line drawn through the centre of a circle bisect a straight line in it which does not pass through the centre, it shall cut it at right angles : and if it cut it at right angles, it shall bisect it.
Página 5 - In any right-angled triangle, the square which is described upon the side subtending the right angle, is equal to the squares described upon the sides which contain the right angle.
Página 5 - If a straight line fall on two parallel straight lines, it makes the alternate angles equal to one another, and the exterior angle equal to the interior and opposite angle on the same side; and also the two interior angles on the same side together equal to two right angles.
Página 6 - IF a straight line be drawn parallel to one of the sides of a triangle, it shall cut the other sides, or those produced, proportionally; and if the sides, or the sides produced, be cut proportionally, the straight line which joins the points of section shall be parallel to the remaining side of the triangle...
Página 57 - 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.
Página 57 - A prism is a solid figure contained by plane figures, of which two that are opposite are equal, similar, and parallel to one another ; and the others parallelograms. XIV. A sphere is a solid figure described by the revolution of a semicircle about its diameter, which remains unmoved.
Página 58 - The base of .a cone is the circle described by that side containing the right angle which revolves.
Página 6 - In equal circles, angles, whether at the centres or circumferences, have the same ratio which the circumferences on which they stand have to one another ; so also have the sectors.
Página 5 - TRIANGLES upon the same base, and between the same parallels, are equal to one another.