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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.
The Elements of Euclid: The Errors, by which Theon, Or Others, Have Long Ago ... - Σελίδα 3
των Robert Simson - 1762 - 466 σελίδες
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## Mensuration of lines, areas, surfaces, and volumes

Robert Rawson - 1856
...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. XVL And this point is called the centre of the circle. XVH. A diameter of a circle is a straight line...

## The Popular Educator, Τόμος 1

1856
...or bounded by a curve line, called the circumference or periphery, which is such that all straight lines drawn from a certain point 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...

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

William Ezra Worthen - 1857 - 410 σελίδες
...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. 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
...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 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,...

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

Euclides - 1858
...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 circumference, are equal to one another. A circle is traced out by the motion of a line round one of its extremities : if the lme BC revolve...

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

John Weale - 1859 - 596 σελίδες
...plain 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 anCHU CIRCULAR. С Г- А other, and this point is called the centre of the circle. The circumference...

## The Train, Τόμος 5

1858
...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...

## Euclid's Elements of Geometry: Chiefly from the Text of Dr. Simson, with ...

Robert Potts - 1860 - 361 σελίδες
...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...And this point is called the center of the circle. xvn. A diameter of a circle is a straight line drawn through the center, and terminated both ways by...

## Euclid's Elements of plane geometry [book 1-6] explicitly enunciated, by J ...

Euclides - 1860
...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. 18. This point is called the centre of the circle, as C. Any other point within the circle is an eccentric...

## The Quadrature of the Circle: Correspondence Between an Eminent ...

James Smith - 1861 - 200 σελίδες
...enclosed by one line, which is called the circumference of the circle, it is such, that all straight lines drawn from a certain point within the figure to the circumference, are equal to one another. This point within the figure is called the centre of the circle. A straight line drawn through the...