Higbee, F. G · New York, John Wiley & Sons · leaf 161
Fig. 117. plane cuts a circle from each surface. Thus, plane R cuts fromthe cone a circle whose radius is yl and from the other surface acircle whose radius is x2. These two circles intersect at A andB two points on the required curve. By passing other planesparallel to R the curve of intersection… … Fig. 118. Discussion. If, with the intersection of the axes of the givensurfaces as a center, auxiliary spheres be passed through thesurfaces they wiU cut circles from each surface. These circlesintersect in points on the curve of intersection. SURFACES OF REVOLUTION 151 Construction. In Fig. 118…
Geometry, Descriptive
Internet Archive · Cornell University Library · Public Domain Mark 1.0. Free to use for anything.
