Young, George, jr, Baxter, Hubert Eugene, joint author · New York, Macmillan · leaf 203
boloid of revolution, which may bedefined as a surface generated by a straight line, revolving aboutanother line not in its own plane. Since these three are the onlypossible cases of revolution of a straight line, and since two ofthem give developable surfaces, it is evident that the hyperboloidof… … VIII, § 162] CURVED SURFACES 185 The more common arrangements of the directrices are asfollows: (1) three lines, either straight or curved, or straightand curved lines in combination; or (2) two lines either straightor curved, or straight and curved lines in combination, anda plane director to…
Geometry, Descriptive
Internet Archive · Cornell University Library · Public Domain Mark 1.0. Free to use for anything.
