Higbee, F. G · New York, John Wiley & Sons · leaf 134
Fig. 100. Fig. ioi. and set back. The axes of the two sections not only turn anangle but they no longer meet. The reason for the latter pointwill be clear from an inspection of Fig. 99. 124 ESSENTIALS OF DESCRIPTIVE GEOMETRY Fig. loi shows an elbow made up of sections of the samecone, the cone…
Geometry, Descriptive
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