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" A zone is a portion of the surface of a sphere included between two parallel planes. "
Builders' Reliable Estimator and Contractors' Guide: A Complete Guide for ... - Page 68
by Frederick Thomas Hodgson - 1917 - 269 pages
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Elements of Geometry: Including Plane, Solid, and Spherical Geometry

George Washington Hull - Geometry - 1807 - 408 pages
...undecim = eleven, + Gr. gonia = an angle.] A polygon of eleven sides. Zone. [Gr. zone — a girdle.] A portion of the surface of a sphere included between two parallel planes. BIOGRAPHICAL NOTES. IN these notes will be found brief sketches of eminent mathematicians who have...
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First Lessons in Geometry: With Practical Applications in Mensuration, and ...

Charles Davies - Geometrical drawing - 1840 - 262 pages
...poles of a sphere 1 17. When is a plane said to be tangent to a sphere '( 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 and DP is a zone. The bases of this zone...
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A Practical System of Mensuration of Superficies and Solids ...

J. M. Scribner - Measurement - 1844 - 130 pages
...14. 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...its bases. If the bases are equally distant from the centre, it is 'called the middle zone. 16. The height of a zone is the perpendicular distance between...
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Elements of plane (solid) geometry (Higher geometry) and trigonometry (and ...

Nathan Scholfield - 1845 - 894 pages
...grent 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, the zone has only a single base. 21....
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Elements of Drawing and Mensuration Applied to the Mechanic Arts: A Book for ...

Charles Davies - Geometrical drawing - 1846 - 254 pages
...in 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 and DF is a zone. The bases of this zone...
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Elementary Geometry: With Applications in Mensuration

Charles Davies - Geometry - 1850 - 238 pages
...it has 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 and DF is a zone. The bases of this zone...
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Elementary Geometry: With Applications in Mensuration

Charles Davies - Geometry - 1850 - 218 pages
...it has 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 and DF is a zone. The bases of this zone...
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Elements of Geometry and Trigonometry: With Applications in Mensuration

Charles Davies - Geometry - 1886 - 340 pages
...when it 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 and DF is a zone- The bases of this zone...
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Elements of Geometry and Trigonometry from the Works of A.M. Legendre ...

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...
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Mathematical Dictionary and Cyclopedia of Mathematical Science: Comprising ...

Charles Davies, William Guy Peck - Electronic book - 1855 - 592 pages
...equal to the area of the lune multiplied by one-third of the radius of the sphere. 34 SPHERICAL ZONE. A portion of the surface of a sphere included between two parallel planes. The circles in which these planes intersect the surface of the sphere arc called bases, and the distance...
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