Anthony, Gardner Chace, 1856- [from old catalog], Ashley, George Francis, [from old catalog] joint author · Boston, D. C. Heath & co. · leaf 120
s tofinding the required points in the line, or lines,of intersection. In Fig. 174 it will be observedthat there is but one continuous curve of intersection, and this is due to the fact thatonly one of the two tangent auxiliary planesthat might be drawn to the cylinder will cutthe cone. If the… … there would have been two curves, the cylinderpassing directly through the cone. Again iftwo planes tangent to the cone had cut thecylinder, as in Fig. 176, the cone would havepierced the cylinder, making two independentcurves of intersection. The condition shownby Fig. 177 is that of the problem…
Geometry, Descriptive
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
