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PERIPHERY of a circle is its entire bounding line ; or it is a curved line, all points of which are equally distant from a point within called the centre.
Plane Geometry - Page 75
by George Albert Wentworth - 1899 - 256 pages

## A Practical Application of the Principles of Geometry to the Mensuration of ...

Jeremiah Day - Measurement - 1815 - 388 pages
...CIRCLE AND ITS PARTS. Aw. 18. Definition LA J *- by a hne winch is equally distant in all its parts from a point within called the centre. The bounding line is called the circumference or periphery! An arc is any portion of the circumference. A semi-circle is half, and a quadrant one...

## Elements of Geometry

Adrien Marie Legendre - Geometry - 1819 - 574 pages
...THIRD. Of the Sphere. DEFTNITIONS. 437. 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 sphere may be conceived to be generated by the revolution of a semicircle I LIE (Jig. 220) about its...

## Elements of Geometry and Trigonometry: With Notes

Adrien Marie Legendre - Geometry - 1822 - 394 pages
...BOOK VII. THE SPHERE. Definitions. I. The sphere is a solid terminated by a curve surface, a1' the points of which are equally distant from a point within, called the centre. D The sphere may be conceived to be generated by the revolution of a semicircle DAE about its diameter...

## The Second [-fifth and Sixth] Part of A Course of Mathematics: Adapted to ...

Jeremiah Day - Geometry - 1824 - 440 pages
...AET. 18. Definition!. A °IRC..LE » « I Plane .. by a line which is equally distant in all its parts from a point within called the centre. The bounding line is called the circumference or periphery. An arc is any portion of the circumference. A semi-circle is half, and a quadrant one-fourth,...

## Elements of Geometry...: Translated from the French for the Use of the ...

Adrien Marie Legendre, John Farrar - Geometry - 1825 - 280 pages
...THIRD. • Of the Sphere. DEFINITIONS. 437. 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 sphere may be conceived to be generated by the revolution of a semicircle DAE (fig. 220) about its...

## Elements of Geometry

Adrien Marie Legendre - Geometry - 1825 - 276 pages
...P:p::A3:a3. Of the Sphere. • DEFINITIONS. 437. 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 sphere may be conceived to be generated by the revolution of a semicircle DAE (fig. 220) about its...

## Elements of Geometry: With Practical Applications, for the Use of Schools

Timothy Walker - Geometry - 1829 - 138 pages
...described by the point B the circumference of a circle, which we define to be — a curved line fill the points of which are equally distant from a point within called the centre — . The whole space enclosed is called a circle, the moving line AB a radius, and the fixed point A the centre....

## A Complete System of Mensuration of Superficies and Solids, of All Regular ...

Tobias Ostrander - Measurement - 1833 - 172 pages
...parallel to the base 7 SECTION II. OF CIRCLES. A CIRCLE is a plane, bounded by a line which is equally distant from a point within called the centre. The bounding line is called the circumference or periphery. An arc is any portion of that circumference. A semicircle is half, and a quadrant is...