| Almon Ticknor - Measurement - 1849 - 144 pages
...contained in the other two squares B and C. SECTION 4. — THE CIRCLE AND MEASUREMENT or ANGLES. 27. **The circumference of a circle is a curved line, all...equally distant from a point within, called the centre.** Every straight line, CA, CE, ,CD, drawn from the centre to the circumference is called a radius, or... | |
| Rufus Putnam - Arithmetic - 1849 - 276 pages
...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... | |
| Elias Loomis - Conic sections - 1849 - 252 pages
...pentagons. BOOK IX. SPHERICAL GEOMETRY. Definitions. 1. A sphere is a solid bounded by a curved surface, **all the points of which are equally distant from a point within, called** the center. The sphere may be conceived to be described by the revolution of a semicircle ADB, about... | |
| J. M. Scribner - Mechanical engineering - 1849 - 264 pages
...revolution of an ellipse about either of its axes. 6. A sphere is a solid, terminated by a curved surface, **all the points of which are equally distant from a point within, called** the center. A sphere may be described by the revolution of a semicircle about a diameter. 7. A radius... | |
| Anna Cabot Lowell - Astronomy - 1850 - 412 pages
...of a Planet. Sidereal and Apparent Time. § 1. 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. The** radius of a sphere is a straight line drawn from the centre to a point in the surface ; the diameter,... | |
| George Roberts Perkins - Geometry - 1850 - 332 pages
...prism; hence they will be their lines of contact. 7. A sphere is a solid terminated by a curve surface, **all the points of which are equally distant from a point within, called the centre. The** sphere m-ay be conceived to be generated by the revolution of a semicircle DAE about its diameter DE;... | |
| Charles Davies - Logic - 1850 - 375 pages
...the number of sides, viz. Pentagons, Hexagons, Heptagons, &c. § 244. A portion of a plane bounded by **a curved line, all the points of which are equally distant from a** certain point within called the centre, is called a circle, and the bounding line is called the circumference.... | |
| Charles Davies - Logic - 1850 - 375 pages
...sides, viz. Pentagons, Hexagons, Heptagons, &c. § 244. A portion of a plane bounded by a cirek»: **curved line, all the points of which are equally distant from a** certain point within called the centre, is called a circle, and the bounding line is called the circumference.... | |
| Adrien Marie Legendre - Geometry - 1852 - 436 pages
...said to be circumscribed about the pyramid. 9. The SPHERE is a solid terminated by a curved surface, **all the points of which are equally distant from a point within, called the centre. The** sphere may be generated by the revolution of a semicircle DAE, about its diameter DE : for, the surface... | |
| Charles Davies - Geometry - 1854 - 436 pages
...said to be circumscribed about the pyramid. 9. The SPHERE is a solid terminated by a curved surface, **all the points of which are equally distant from a point within, called the centre. The** sphere may be generated by the revolution of a semicircle DAE, about its diameter DE : for, the surface... | |
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