Descriptive geometry for students in engineering science and architecture; a carefully graded course of instruction (1915)
Armstrong, Henry F. (Henry Fry), 1868- · New York, J. Wiley & sons, inc.; [etc., etc.] · leaf 114
rsect the circular sections of the cone by the same planes,then the points of intersection are points on both surfaces. Another method of determining the intersection of the surfaces of these soHds.is by the use of intersecting spherical surfaces instead of intersecting planes, anddepends on the… … Fig. io: Fig. 103. (2) That if a sphere intersects another sphere the intersection of their sur-faces is the circumference of a circle, the plane of which is perpendicular to the linejoining their centres; and (3) That if a sphere, with its centre in the axis of a right circular cone…
Geometry, Descriptive
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