Mechanical drawing. Elementary and advanced (1910)
Reid, John S. (John Simpson), 1856- · New York, J. Wiley & sons; [etc, etc.] · leaf 138
ube resting on its lower front corner, 1, Fig. 167, and its base ORTHOGRAPHIC PROJECTION. 123 elevated so that its diagonal AB is parallel to the horizontalplane. Then if the cube is rotated on the corner 1 until thediagonal AB is at right angles to the vert, plane, i.e.,through an angle of 900,… … Fig. 167. with the 300 X 6o° triangle. But although these lines andfaces appear to be equal, yet, being inclined to the plane ofprojection, they are shorter than they would actually be onthe cube itself. However, since they all bear the same pro-portion to the original sizes, they can all be…
