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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.
An Elementary Treatise on Plane and Solid Geometry - Page 24
by Benjamin Peirce - 1837 - 150 pages

## The Architect's and Builder's Pocket-book: A Handbook for Architects ...

Frank Eugene Kidder - Architecture - 1908 - 1756 pages
...perimeter is the boundary line of a plane figure. A circle is a portion of a plane bounded by a curve, all the points of which are equally distant from a point within called the centre (Fig. 19). The circumference is the curve which bounds the circle. A radius is any straight line drawn...

## New Plane Geometry

Webster Wells - Geometry, Plane - 1908 - 208 pages
...B 23. We define a circle as a portion of a plane bounded by a curve, called the circumference, all points of which are equally distant from a point within called the centre. An arc is any portion of the circumference ; as AB. A radius is a straight line drawn from the centre...

## New Plane and Solid Geometry

Webster Wells - Geometry - 1908 - 338 pages
...legs. 23. We define a circle as a portion of a plane bounded by a curve, called the circumference, all points of which are equally distant from a point within called the centre. An arc is any portion of the circumference ; as AB. A radius is a straight line drawn from the centre...

## An Introductory Logic

James Edwin Creighton - Logic - 1909 - 548 pages
...mathematics, for example, a circle may be defined equally well as 'a plane figure bounded by a line, all points of which are equally distant from a point within called the centre,' or as' the plane figure generated by revolving a straight line about one of its extremities which remains...

## Kimball's Commercial Arithmetic: Prepared for Use in Normal, Commercial and ...

Gustavus Sylvester Kimball - Business mathematics - 1911 - 444 pages
...which is a unit of some known length. 365. A sphere is a body bounded by a uniformly curved surface, all the points of which are equally distant from a point within, called the center. 366. To find the convex surface of any prism or cylinder. Rule. Multiply the perimeter...

## Builders' Reliable Estimator and Contractors' Guide: A Complete Guide for ...

Frederick Thomas Hodgson - 1917 - 716 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...