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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 Euclid, John Playfair - 1819 - 333 pages

## The Popular Educator, Volume 1

1856 - 422 pages
...is a plane figure contained or bounded by a curve line, called the circumference or periphery, which is such that all straight lines drawn from a certain...within the figure to the circumference are equal to each other. This point is called the centre of the circle, and each of the straight Unes is called...

## A course of practical geometry for mechanics

William Pease - 1856 - 108 pages
...frequently in mathematical drawings, and besides, is most simple of construction. An Ellipse, like a circle, is a " plane figure, contained by one line, which is called its circumference ;" it has two diameters, called respectively, the transverse and conjugate ; the...

## Appletons' Cyclopędia of Drawing: Designed as a Text-book for the Mechanic ...

William Ezra Worthen - Architectural drawing - 1857 - 658 pages
...regular polygons ; of which figs. 11-14 are examples, annexed to which are their respective designations. 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 term circle is very generally used for the circumference,...

## Appletons' Cyclopędia of Drawing: Designed as a Text-book for the Mechanic ...

William Ezra Worthen - Architectural drawing - 1857 - 654 pages
...are examples, annexed to which are their respective designations. A circle is a plane figure contamed by one line, which is called the circumference, and...figure to the circumference, are equal to one another. And this point is called the centre of the circle. The term circle is very generally used for the circumference,...

## APPLETONS' CYCLOPAEDIA OF DRAWING

W.E. WORTHEN - 1857 - 600 pages
...regular polygons; of which figs. 11-14 are examples, annexed to which are their respective designations. A circle is a plane figure contained by one line, which is called the tircwnference, and is such that all straight lines, drawn from a certain point within the figure to...

## Rudimentary Dictionary of Terms Used in Architecture: Civil, Architecture ...

John Weale - Architecture - 1859 - 626 pages
...etc., for describing circles, measuring distances, and taking the thickness of solids. Circle, a plain figure contained by one line, which is called the...within the figure to the circumference are equal to one anCHU CIRCULAR. С Г- А other, and this point is called the centre of the circle. The circumference...

## Gradations in Euclid : books i. and ii., with an explanatory preface [&c ...

Euclides - 1858 - 248 pages
...in a figure are also points in the same plane, the figure is called a plane figure." — HOSE. 15. A circle is a plane figure contained by one line, which is called the circwnfermce, and is such that all straight lines drawn from a certain point within the figure to the...

## The Train, Volume 5

1858 - 402 pages
...figure, contained by one line, selfinterest, which is called the circumference, and is such, that all lines drawn from a certain point within the figure, to the circumference (i,e., all motives, from the highest to the lowest men), are equal to one another. Sometimes a circle...