Anthony, Gardner Chace, 1856- (from old catalog), Ashley, George Francis, (from old catalog) joint author · Boston, D. C. Heath & co. · leaf 107
he elements will be per-pendicular to it. The ends of these perpen-diculars will be at a distance from the lineequal to the true distances of the ends of theelements from the right section. A smoothcurve may then be drawn through the ends ofthe perpendiculars. Method. 1. Draw a right line equal… … 1 Fig. 163. DEVELOPMENT OF CYLINDER 91 length Dj, and d is projected to c?^, thus ob-taining the true lengths of each portion of D.Since all the elements of a cylinder are ofthe same length, D^ represents the true lengthof each element, and their segments are ob-tained by projecting the various…
Geometry, Descriptive
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