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A circle is a plane figure contained by one line, which is called the circumference, and is such that all straight lines drawn from a certain point within the figure to the circumference, are equal to one another.
Elements of Geometry: Containing the First Six Books of Euclid, with a ... - Page 19
by John Playfair - 1819 - 333 pages

## The Elements of Plane Geometry

Association for the Improvement of Geometrical Teaching - 1903 - 342 pages
...intercepted between perpendiculars let fall on it from the extremities of the former. DEF. 41. A circlets a plane figure contained by one line, which is called the circumference, and is suck that all straight lines drawn from a certain point within the figure to the circumference are...

## A Text-book of Euclid's Elements for the Use of Schools, Book 1

Euclid - Euclid's Elements - 1904 - 488 pages
...circle (i. Def. 15), may also be noted : 22J. A sphere is a solid figure contained by one surface, which is such that all straight lines drawn from a certain point within it to the surface are equal : this point is called the centre of the sphere. A radius of a sphere is...

## The advanced class-book of modern geography, by W. Hughes and J.F. Williams ...

William Hughes - 1908 - 942 pages
...the extremity of anything, and a Figure is that which is enclosed by one or more boundaries. Hence A Circle is a plane figure contained by one line, which is called the circumference, and is such thai all straight lines drawn from a certain point within the figure to the circumference are equal...

## The advanced class-book of modern geography, by W. Hughes and J.F. Williams ...

William Hughes - 1910 - 934 pages
...the extremity of anything, and a Figure is that which is enclosed by one or more boundaries. Hence A Circle is a plane figure contained by one line,...figure to the circumference are equal to one another. This point is the centre of the circle. A Diameter of a circle is a straight line drawn through the...

## The Ontario High School Geometry: Theoretical

Alexander H. McDougall - Geometry - 1910 - 316 pages
...equal to each other is called a rhombus. A circle is a figure consisting of one closed curved line, called the circumference, and is such that all straight...lines drawn from a certain point within the figure, called the centre, to the circumference are equal to each other. In a circle a st. line drawn from...

## Practical Geometry and Graphics

David Allan Low - Geometrical drawing - 1912 - 468 pages
...term " line " is used it generally stands for " straight line." 2. The Circle — Definitions. — A circle is a plane figure contained by one line,...figure to the circumference are equal to one another : and this point is called the centre of the circle. . The meanings of the terms radius, diameter,...

## The Americana: A Universal Reference Library, Comprising the Arts ..., Volume 5

Frederick Converse Beach, George Edwin Rines - Encyclopedias and dictionaries - 1912 - 916 pages
...Apus, Musca, Centaurus , Lupus, Norma, and Triangulum Australe. Circle, in geometry, a plane ligure contained by one line, which is called the "circumference"...that all straight lines drawn from a certain point (the "centre") within the figure to the circumference are equal to one another. According to this definition...

## Everybody's Cyclopedia: A Concise and Accurate Compilation of the ..., Volume 1

Charles Leonard-Stuart, George Jotham Hagar - Encyclopedias and dictionaries - 1912 - 666 pages
...year, he forgot his glory in his devotion to pleasure. Circle, a plane figure contained by one Hue, which is called the circumference, and is such that all straight lines drawn from a certain point (the center) within the figure to the circumference are equal lo one another. Circle, Magic, u space...