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" The radius of a sphere is a straight line, drawn from the centre to any point of the surface ; the diameter, or axis, is a line passing through this centre, and terminated on both sides by the surface. "
Elements of Geometry and Trigonometry: With Notes - Page 176
by Adrien Marie Legendre - 1830 - 316 pages
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High School Arithmetic

James B. Dodd - 1853 - 402 pages
...bounded by a curved surface, all points of which are equidistant from a point within called the centre. The radius of a sphere is a straight line drawn from the centre to any point of the surface; and a. diameter is a straight line passing through the centre, and terminated both ways by the surface....
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The Book of Nature: An Elementary Introduction to the Sciences of Physics ...

Friedrich Schoedler - Astronomy - 1858 - 728 pages
...surface, and every point of which is equally distant from a point within the sphere, called the centre. A straight line drawn from the centre to any point of the surface is a semi-diameter, and the extension of this line to the opposite surface of the sphere is called...
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Elements of Geometry and Trigonometry from the Works of A.M. Legendre ...

Charles Davies - Geometry - 1854 - 436 pages
...the sphere, any circular sector, as DCF, or FCA, describes a solid, called a spherical sector. 11. The radius of a sphere is a straight line drawn from...surface ; the diameter or axis is a line passing through the centre, and terminated, on both sides, by the surface. All the radii of a sphere are equal ; all...
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Orr's Circle of the Sciences: The mathematical sciences

William Somerville Orr - Science - 1854
...bounded by a surface, of which every point is equally distant from a point within it called the centre. The radius of a sphere is a straight line drawn from the centre to any point in the sphere. IV. A straight line drawn through the centre, and terminated both ways by the surface...
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The Measure of the Circle: Perfected in January, 1845

John Davis - Circle-squaring - 1854 - 156 pages
...of the circle. The radius of a circle is a straight line drawn from the centre to the circumference. The radius of a sphere is a straight line drawn from the centre to the surface. An angle is the opening between two lines which meet each other at a point. One straight...
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A Manual of Astronomy and the Use of the Globes ...

Henry Kiddle - 1854 - 154 pages
...sphere is a straight line drawn through the centre, terminated both ways by the surface of the sphere. The radius of a sphere is a straight line drawn from the centre to the surface. Circles drawn on the surface of a sphere are of two kinds, great and small. Great circles...
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Plane and Solid Geometry: To which is Added Plane and Spherical Trigonometry ...

George Roberts Perkins - Geometry - 1856 - 235 pages
...described in this movement by the curve DAE will have all its points equally distant from the centre C. The radius of a sphere is a straight line drawn from the centre to any point in the surface ; the diameter, or axis, is a line passing through this centre, and terminated on both...
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Elements of Geometry and Trigonometry from the Works of A. M. Legendre ...

Adrien Marie Legendre, Charles Davies - Geometry - 1857 - 444 pages
...the sphere, any circular sector, ae DCF, or FCA, describes a solid, called a spherical sector. 11. The radius of a sphere is a straight line drawn from...centre to any point of the surface ; the diameter or axif is a line passing through the centre, and terminated, on both sides, by the surface. All the radii...
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Elements of Geometry and Conic Sections

Elias Loomis - Conic sections - 1857 - 226 pages
...be described by the revolution of a semicircle ADB, about its diameter AB, which remains unmoved. 2. The radius of a sphere, is a straight line drawn from the center to any point of the surface. The diameter, or axis, is a line passing through the center, and...
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Elements of Geometry and Conic Sections

Elias Loomis - Conic sections - 1858 - 234 pages
...be described by the revolution of a semicircle ADB, about its diameter AB, which remains unmoved. 2. The radius of a sphere, is a straight line drawn from the center to any point of the surface. The diameter, or axis, is a line passing through the center, and...
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