 | Arthur Latham Baker - Geometry, Solid - 1893 - 150 pages
...contrary to hypothesis. .-. Sph. Z <7>Sph, SPHERICAL SURFACES. DEFINITIONS. Q . E . D . 292. A zone is the portion of the surface of a sphere included between two parallel planes. The circumferences of the sections made by the planes, are called the bases of the zone, and the distance... | |
 | Webster Wells - Geometry - 1894 - 400 pages
...whose slant height is to the diameter of its base as 13 to 10. THE SPHERE. DEFINITIONS. 679. A none is a portion of the surface of a sphere included between two parallel planes. The circumferences of the circles which bound the zone are called the bases, and the perpendicular... | |
 | George Clinton Shutts - Geometry - 1894 - 412 pages
...case the above construction will produce but two triangles, whose sum is equal to AB C. 674. A lune is a portion of the surface of a sphere included between two semi-circum- \ ferences of great circles, as ABC D. 675. The angle of a lune is the angle of the two... | |
 | John Macnie - Geometry - 1895 - 390 pages
...surfaces of two spheres are to each other as the squares of their radii or diameters. 703. DEFINITIONS. A zone is a portion of the surface of a sphere included between two parallel planes. The altitude of the zone is the perpendicular distance between the parallel planes. The bases of the... | |
 | Encyclopedias and dictionaries - 1897 - 890 pages
...circle to the n. pole; and south frigid zone, from the s. polar circle to the s. pole: in math., the portion of the surface of a sphere included between two parallel planes; a band or stripe running round any object; a band or area encircling anything; in OE., circumference.... | |
 | Arthur A. Dodd, B. Thomas Chace - Geometry - 1898 - 468 pages
...sides; as AOBC D. The lune ABCD is called the base of the wedge and the diameter AB is the edge. 673. A zone is a portion of the surface of a sphere included between two parallel planes. The circumferences of the secions are called the bases of the zone. The distance between he bases is... | |
 | James Howard Gore - Geometry - 1898 - 232 pages
...area. QED 527. Con. The area of a spherical polygon is equal to its spherical excess. THE SPHERE. 528. A Zone is a portion of the surface of a sphere included between parallel planes. The circumference of the circles which bound the zone are called the Bases, and the... | |
 | Arthur A. Dodd, B. Thomas Chace - Geometry - 1898 - 468 pages
...on a sphere is less than the radius of the sphere. SPHERICAL MEASUREMENTS. DEFINITIONS. 670. A lune is a portion of the surface of a sphere included between two semicircumferences of great circles; as ABC D. B The angle of the lune is the angle formed by its bounding... | |
 | George Albert Wentworth - Geometry - 1899 - 496 pages
...circumference of the great circle. BOOK VIII. SOLID GEOMETRY. MEASUREMENT OF SPHERICAL SURFACES. 817. DBF. A zone is a portion of the surface of a sphere included between two parallel planes. The circumferences of the sections made by the planes are called the bases of the zone, and the distance... | |
 | George Albert Wentworth - Geometry, Solid - 1899 - 246 pages
...circumference of the great circle. BOOK VIII. SOLID GEOMETRY. MEASUREMENT OF SPHERICAL SURFACES. 817. DEF. A zone is a portion of the surface of a sphere included between two parallel planes. The circumferences of the sections made by the planes are called the bases of the zone, and the distance... | |
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A zone is a portion of the surface of a sphere included between two parallel planes. 
