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CIRCLE is a plane figure bounded by a curved line, all the points of which are equally distant from a point within called the centre; as the figure ADB E.
Elements of Geometry and Trigonometry: With Notes - Page 27
by Adrien Marie Legendre - 1828 - 316 pages

The Elements of Geometry

Webster Wells - Geometry - 1886 - 392 pages
...section is a circle. THE SPHERE. DEFINITIONS. 616. A sphere is a solid bounded by a curved surface, all •points of which are equally distant from a point within called the centre. A radius of a sphere is a straight line drawn from the centre to the surface, and a diameter is a straight...

The Architect's and Builder's Pocket-book

Frank Eugene Kidder - Architecture - 1886 - 640 pages
...part of it by a plane parallel to the base. A sphere is a volume bounded by a curved sin-face, all points of which are equally distant from a point within, called the centre. treats of the measurement of lines, surface*. "Fig. 21 .Mensuration find rolumes. RULES. To compute,...

A Grammar Shcool Arithmetic

George Albert Wentworth - Arithmetic - 1886 - 372 pages
...the middle of AB, § 347. FIG. 14. Fie. 15. CIRCUMFERENCES. 356. A circumference is a curved line all points of which are equally distant from a point within called the centre. 357. To trace a circumference, fix upon paper one of the points of the compasses open, and turn the...

Exercises in Arithmetic

George Albert Wentworth, George Anthony Hill - Arithmetic - 1887 - 448 pages
...does the chimney contain ? ARITHMETICAL EXERCISES. A Sphere is a solid bounded by a curved surface all points 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...

Chauvenet's Treatise on Elementary Geometry

William Chauvenet - Geometry - 1887 - 331 pages
...parallelogram. BOOK II. THE CIRCLE. 1. DEFINITIONS. A circle is a portion of a plane bounded t>y t« curve, all the points of which are equally distant from a point within it called the centre. The curve which bounds the circle is called its circumference. Any straight line...

Practical Arithmetic

Charles Scott Venable - Arithmetic - 1888 - 402 pages
...of its sides equal. The figure C1 is a square. 935. A clrele is a plane figure bounded by a curved line, all the points of which are equally distant from a point within called the centre. 936. The line that bounds a circle is the circumference ; any straight line from the centre to the...

A Text-book of Geometry

George Albert Wentworth - Geometry - 1888 - 274 pages
...DEFINITIONS. 210. A circle is a portion of a plane bounded by a curved line called a circumference, all points of which are equally distant from a point within called the centre. 211. A radius is a straight line drawn from the centre to the circumference ; and a diameter is a straight...

Elements of Pedagogics

James N. Patrick - Educational psychology - 1891 - 232 pages
...is heavier than water; therefore, lead will sink. A circle is a plane figure bounded by a curve, all points of which are equally distant from a point within called the centre; the figure on the blackboard is a plane figure bounded by a curved line, all points of which are equally...