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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

## A Practical Arithmetic

George Albert Wentworth - Arithmetic - 1897 - 396 pages
...Angular Measure. 210. A circle is a plane figure bounded by a curved line called the circumference, all points of which are equally distant from a point within called the centre. Any part of the circumference is called an arc. 211. A straight line drawn through the centre, having...

## Exercises in Arithmetic

George Albert Wentworth, George Anthony Hill - Arithmetic - 1897 - 476 pages
...feet of brick does the chimney contain ? A Sphere is a solid bounded by a curved surface all pointe of which are equally distant from a point within called the centre. A straight line drawn from the centre to the surface is called a radius, and a straight line drawn...

George Albert Wentworth - Arithmetic - 1898 - 424 pages
...plane figure. 137. A circle is a plane figure bounded by a curved line called the circumference, all points of which are equally distant from a point within called the centre. A straight line drawn through the centre, having its ends in the circumference, is called a diameter;...

## Plane and Solid Geometry

James Howard Gore - Geometry - 1898 - 232 pages
...OCTAEDRON ICOSAEDRON BOOK VIII. THE SPHERE. DEFINITIONS. 475. A Sphere is a solid bounded by a surface, all points of which are equally distant from a point within called the centre. A sphere may be generated by the revolution of a semicircle about its diameter as an axis. 476. A Radius...

George Albert Wentworth - 1898 - 424 pages
...plane figure. 137. A circle is a plane figure bounded by a curved line called the circumference, all points of which are equally distant from a point within called the centre. A straight line drawn through the centre, having its ends in the circumference, is called a diameter...

George Albert Wentworth - Arithmetic - 1898 - 424 pages
...plane figure. 137. A circle is a plane figure bounded by a curved line called the circumference, all points of which are equally distant from a point within called the centre. A straight line drawn through the centre, having its ends in the circumference, is called a diameter...

## Essentials of Geometry (plane).

Webster Wells - Geometry - 1898 - 264 pages
...DEFINITIONS. 142. A circle (O) is a portion of a plane bounded by a curve called a circumference, all points of which are equally distant from a point within, called the centre; as ABCD. An arc is any portion of the circumference ; as AB. A radius is a straight line drawn from...

## Stone; an Illustrated Magazine, Volume 17

Building stones - 1898 - 494 pages
...and longitude, difference of direction, etc. A circle is a plane figure, bounded by a curved line, all the points of which are equally distant from a point within called the center. The circumference of a circle is^ its entire boundary line. The arc of a circle is any...