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" THE sphere is a solid terminated by a curve surface, all the points of which are equally distant from a point within, called the centre. "
Elements of Geometry: With, Practical Applications - Page 231
by George Roberts Perkins - 1850 - 320 pages
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Practical Arithmetic: Uniting the Inductive with the Synthetic Mode of ...

James Bates Thomson - Arithmetic - 1846 - 362 pages
...diameter by 3.14159. (Leg. 11. 5. Sch.) Note. — The circumference of a circle is a curve line, al1 the points of which are equally distant from a point within, called the centre. The diameter of a circle is a straight line which passes through the centre, and is terminated on both...
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Elements of Geometry: With Practical Applications ...

George Roberts Perkins - Geometry - 1847 - 308 pages
...their lines of contact. 7. A sphere is a solid terminated by a curve surface, all the points of wliich are equally distant from a point within, called the...surface described in this movement, by the curve DAE, witl have all its points equally distant centre C from the 8. The radius of a sphere* is a straight...
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Higher Arithmetic: Or, The Science and Application of Numbers; Combining the ...

James Bates Thomson - Arithmetic - 1847 - 434 pages
...the diameter by 3.14159. (Leg. Y. 11. Sell.) Note. — The circumference of a circle is a curve line, all the points of which are equally distant from a point within, called the centre. The diameter of a circle is a straight line which passes through the centre, and is terminated- on both...
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An Elementary Treatise on Plane and Solid Geometry

Benjamin Peirce - Geometry - 1847 - 150 pages
...homologous sides. CHAPTER XVIII. THE SPHERE. 415. Definition. A sphere is a solid terminated by a curved surface, all the points of which are equally distant from a point within called the centre. 416. Corollary. The sphere may be conceived to be generated by the revolution of a semicircle, DAE...
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The American Arithmetic

James Robinson (of Boston.) - 1847 - 302 pages
...cone. 7. A SPHERE, or GLOBE, is a solid, bounded by a convex surface, every point of which is equally distant from a point within, called the centre. The sphere may be conceived to be formed by the revolution of a semicircle about its diameter. The figure ACB represents a sphere. 8....
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Higher Arithmetic: Or, The Science and Application of Numbers; Combining the ...

James Bates Thomson - Arithmetic - 1847 - 424 pages
...the diameter by 3.14159. (Leg. V. 11. Sch.) Note. — The circumference of a circle is a curve line, all the points of which are equally distant from a point within^ called the ce-ndre. The diameter of a. circle is a straight line which passes through the centre, and is terminated...
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Higher Arithmetic, Or, The Science and Application of Numbers: Combining the ...

James Bates Thomson - Arithmetic - 1848 - 432 pages
...the diameter by 3.14159. (Leg. V. 11. Sch.) Note.—The circumference of a circle is a curve line, all the points of which are equally distant from a point within, called the centre. The diameter of a circle is a straight line which passes through the centre, and is terminated on both...
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A treatise on plane and spherical trigonometry

Thomas Grainger Hall - Trigonometry - 1848 - 194 pages
...called a diameter. All the radii of a sphere are equal, and the diameter is double of the radius. 3. The sphere may be conceived to be generated by the revolution of a semicircle round its diameter ; and as all lines perpendicular to this diameter will necessarily describe circles,...
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Putnam's Arithmetic

Rufus Putnam - Arithmetic - 1849 - 276 pages
...the middle of one end to the middle of the opposite end. 10. A SPHERE, or CLOSE, is a solid bounded by a curve surface, all the points of which are equally distant from a point within called the centre. 11. A hemisphere is half a sphere. 12. The axis or diameter of a sphere is a line passing through the...
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Elements of Geometry and Trigonometry Translated from the French of A.M ...

Charles Davies - Trigonometry - 1849 - 384 pages
...CIRCLE, AND THE MEASUREMENT OF ANGLES. Definitions. 1. The circumference of a circle is a curved line, all the points of which are equally distant from a point within, called the centre. The circle is Ihe space terminated by this curved line.* 2. Every straight line, CA, CE, CD, drawn from...
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