Higbee, F. G · New York, John Wiley & Sons · leaf 59
Fig. 43. 48 ESSENTIALS OF DESCRIPTIVE GEOMETRY of the revolved position of N. BN may now be revolved to thefirst position bn, and n will be shown at n. The elevation ofthe hopper may now be drawn as shown by the figure. 39. Special Cases, i. To find the length of a hne which liesin the first and… … 2. To find the length of a Hne which Has in the profile plane. 40. Proposition 2. Given two views of a Hne to find where itpierces the planes of projection. Discussion. The point where the line pierces H must He onthe line itself and in the H plane. Therefore, the projections ofthe required…
Geometry, Descriptive
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