 ... the great circle parallel to the vertical plane of projection ; and these projections, which will be circular arcs, described from the point a as center, and with arbitrary radii, will cut the two generating lines in points k, p. This being premised,...  An Elementary Treatise on Descriptive Geometry... - Page 82by John Fry Heather - 1851 - 137 pagesFull view - About this book
 | Charles Frederick Partington - Building - 1825 - 342 pages
...is horizontal, and tends to the axis of a spheric vaulting, that their mutual intersection must be in the circumference of a circle, the plane of which will be perpendicular to the horizon. Hence the beautiful fntersections of sphcro-cylindric groins, which are so much admired in... | |
 | John Fry Heather - Geometry, Descriptive - 1851 - 228 pages
...intersection of the two axes. For each of the surfaces of this series, construct the projection, iknop q, of the great circle parallel to the vertical plane...diameter equal to ko, the circumference of a circle KEO B'. Moreover, each of the series of spherical surfaces will cut the second surface of revolution... | |
 | Gaspard Monge (comte de Péluse.), John Fry Heather - 1851 - 152 pages
...KEO K'. Moreover, each of the series of spherical surfaces will cut the second surface of revolution in the circumference of a circle, the plane of which will be perpendicular to the vertical plane of projection, and of which the vertical projection will be obtained by drawing through... | |
 | Alphonse Andrew Adler - Mechanical drawing - 1912 - 372 pages
...point in space not in the plane containing BB. If A be revolved about BB as an axis, it will describe a circle, the plane of which will be perpendicular to the axis. In other words, A will fall somewhere on a line Ba" perpendicular to BB. The line Ba" must be perpendicular... | |
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