| Almon Ticknor - Measurement - 1849 - 144 pages
...SECTION 4. — THE CIRCLE AND MEASUREMENT or ANGLES. 27. The circumference of a circle is a curved line, **all the points of which are 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... | |
| J. M. Scribner - Mechanical engineering - 1849 - 264 pages
...the 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... | |
| Elias Loomis - Conic sections - 1849 - 252 pages
...with 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... | |
| Anna Cabot Lowell - Astronomy - 1850 - 412 pages
...the Orbit 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,... | |
| Charles Guilford Burnham - 1850 - 352 pages
...base. 8. A sphere is a solid, bounded by one continued 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, which remains fixed. A hemisphere is half... | |
| Benjamin Greenleaf - Arithmetic - 1850 - 368 pages
...vertex. 8. A sphere is a solid, bounded by one continued 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, which remains fixed. 9. The segment of... | |
| John Weale - 1850 - 586 pages
...surface, every point of which is equally distant from a point within, called the centre of the sphere, and **may be conceived to be generated by the revolution of a semicircle** about its diameter, which is fixed, and is called the axis of the sphere Spherical bracketing, the... | |
| Adrien Marie Legendre - Geometry - 1852 - 436 pages
...CIRCLE, AND THE MEASUREMENT OF ANGLES. DEFINITIONS. 1. 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** circle is the portion of the plane terminated by the circumference. 2. Every straight line, drawn from... | |
| Charles Davies - Geometry - 1854 - 436 pages
...CIRCLE, AND THE MEASUREMENT OF ANGLES. DEFINITIONS. 1. 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** circle is the portion of the plane terminated by the circumference. 2. Every straight line, drawn from... | |
| George Roberts Perkins - Geometry - 1856 - 460 pages
...COMBINATION WITH THE STRAIGHT LINE. DEFINITIONS. I. 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 the space bounded by the circumference. II. Any straight line drawn from the centre to the... | |
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