Young, George, jr, Baxter, Hubert Eugene, joint author · New York, The Macmillan Co. · leaf 177
ever, only one nappe is drawn, and the elementsterminate in a plane base. The right circular cone is a specialcase (Fig. 155). A cylinder is merely a special-case cone, the apex being at aninfinite distance from the base. Thus all the elements areparallel, and there are no separate nappes. The… … plane perpendicular to the elements. In the case of a cone,the right section is perpendicular to the axis. (Compare § 52.) The cone and cylinder being so closely related, any operationthat can be performed on one of them may be performed onthe other with only a slight change in the method, and…
Geometry, Descriptive
Internet Archive · Cornell University Library · Public Domain Mark 1.0. Free to use for anything.
