Young, George, jr, Baxter, Hubert Eugene, joint author · New York, Macmillan · leaf 129
(16, 8, 8). Find the angle between cd and F. 110 DESCRIPTIVE GEOMETRY [VI, §99 99. To Draw the Traces of a Plane, Given One Trace andthe Angle of Inclination to H or V. I. First Method. In Fig. 110, let the trace ZZ* be givenand let the required angle of inclination to ff be 60°. It isrequired to… … A angle at a being the true angle between Z and H, or 60. Im«agine this triangle to have been rotated into V, on Y Y° as anaxis, a* moving to a*. It will now be seen in its true size, thehypotenuse making an angle of 60° with HA. Drawing thehypotenuse, the other apex, h, is located at 6 . This is a…
Geometry, Descriptive
Internet Archive · Cornell University Library · Public Domain Mark 1.0. Free to use for anything.
