 | Charles Davies - Geometrical drawing - 1840 - 264 pages
...of a sphere ? 17. When is a plane •aid to be tangent to a sphere 1 Of the Round Bodies. 18. A zone is a portion of the surface of a sphere, included between two parallel planes which form its bases. Thus, the part of the surface included between the planes AE... | |
 | J. M. Scribner - Measurement - 1844 - 130 pages
...The height of a segment is the distance from the middle of its base to the convex surface. 15. A Zone is a portion of the surface of a sphere, included between two parallel planes which form its bases. If the bases are equally distant from the centre, it is 'called... | |
 | Nathan Scholfield - 1845 - 894 pages
...circle. 19. A plane is tangent to a sphere, when their surfaces have but one point in common. 20. A zone is a portion of the surface of a sphere included between two parallel planes, which form its bases. One of ihese planes may be tangent to a sphere ; in which case,... | |
 | Charles Davies - Geometrical drawing - 1846 - 254 pages
...common with it. Thus, AB is a tangent plane. 50. What is a spherical zone ? what are its bases ? A zone is a portion of the surface of a sphere, included between two parallel planes which form its bases. Thus, the part of the surface included between the planes AE... | |
 | Charles Davies - Geometry - 1850 - 218 pages
...but one point in common with it. Thus, AB is a tangent plane, touching the sphere at B. 32. A zone is a portion of the surface of a sphere, included between two parallel planes which form its bases. Thus, the part of the surface included between the planes AE... | |
 | Charles Davies - Geometry - 1850 - 238 pages
...but one point in common with it. Thus, AB is a tangent plane, touching the sphere at B. 32. A zone is a portion of the surface of a sphere, included between two parallel planes which form its bases. Thus, the purt of the surface included between the planes AE... | |
 | Charles Davies - Geometry - 1886 - 340 pages
...has but one point in common with it- Thus, AB is a tangent plane, touching the sphere at B32 A zone is a portion of the surface of a sphere, included between two parallel planes which form its bases- Thus, the part of the surface included between the planes AE... | |
 | Charles Davies - Geometry - 1854 - 436 pages
...POLYGON is a portion of the surface of a sphere bounded by three or more arcs of great circles. 4. A LUNE is a portion of the surface of a sphere included between two semi•circles intersecting in a common diameter of the sphere. 5. A SPHERICAL WEDGE, or UNGULA, is... | |
 | RICHARD OWEN - 1857 - 264 pages
...were deposited in the southern regions, and afterwards brought to the surface by igneous upheaval. 3. A Lune is a portion of the surface of a sphere included between two semicircles intersecting in a common diameter of the sphere. (Davies' Legendre, Book ix.) 4. A spherical... | |
 | Adrien Marie Legendre, Charles Davies - Geometry - 1857 - 442 pages
...POLYGON is a portion of the surface of a sphere bounded by three or more arcs of great circles. 4. A LUNE is a portion of the surface of a sphere included between two semi•circles intersecting in a common diameter of the sphere. 5. A SPHERICAL WEDGE, or UNGULA, is... | |
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A zone is a portion of the surface of a sphere included between two parallel planes. The circumferences of the sections... 
