Young, George, jr, Baxter, Hubert Eugene, joint author · New York, The Macmillan Co. · leaf 110
in the line he. Now let Y berotated about FF, into H, soas to show be and a in theiractual relations. This rotationis shown in Fig. 95. The pointb falls at i*, which is located inFig. 94 by making fc^ft*equal to fe^fe and theangle 0*6*6 equal to 90°.The point arotates to a*.The perpen-dicular…
Geometry, Descriptive
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