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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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## Elements of Geometry: Containing the First Six Books of Euclid, with a ...

John Playfair - 1806 - 311 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. XII. And this point is called the centre of the circle. XHL A diameter of a circle is a straight line...

## An Essay on the Teeth of Wheels: Comprehending Principles, and Their ...

Robertson Buchanan - 1808 - 164 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. 4. The radius of a circle, is a right line drawn...

## Elements of Geometry: Containing the First Six Books of Euclid, with a ...

John Playfair - 1819 - 333 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. XII. And this point is called the centre of the circle. XIII. A diameter of a circle is a straight...

## The First Six Books with Notes

Euclid - 1822 - 179 σελίδες
...a plane figure bounded by one line,, which is called the circumference, and is such that all right lines drawn from a certain point within the figure, to the circumference, are equal to one another. 16., And this point is called the centre of the circle. 17.. A diameter of a circle is a right line-...

## Practical Essays on Mill Work and Other Machinery, Τόμος 1

Robertson Buchanan - 1823 - 588 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. 57- The radius of a circle, is a straight line drawn...

## The Elements of Euclid: The Errors by which Theon, Or Others, Have Long ...

Robert Simson - 1827 - 513 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 one another. XVI. And this point is called the centre of the circle. XVII. A diameter of a circle is a straight line drawn through SeeN. the centre,...

## Geometry, Plane, Solid, and Spherical, in Six Books: To which is Added, in ...

Pierce Morton - 1830 - 272 σελίδες
...figure contained by one / \ line, which is called the circumference, and is each that all straight lines drawn from a certain point within the figure to the circumference are equal to one another. This point is called the centre of the circle ; and the distance from the centre to the circumference...

## The First Six Books of the Elements of Euclid: With Notes

Euclid - 1833 - 183 σελίδες
...is a plane figure bounded by one line, which is called the circumference, and is such that all right lines, drawn from a certain point within the figure to the circumference, are equal to one another. 1 6. And this point is called the centre of the circle. See N. 17. A diameter of a circle is a right...

## The Elements of Euclid: Viz. the First Six Books, Together with the Eleventh ...

Euclid - 1835 - 513 σελίδες
...contained by one line, which Book I. is called the circumference, and is such that all straight vpr"-' lines drawn from a certain point within the figure...circumference are equal to one another. XVI. And this point is calledihe centre of the circle. XVII. A diameter of a circle is a straight line drawn through the centre,...

## Library of Useful Knowledge: Geometry, plane, solid, and spherical [by ...

1835
...line, which is called the circumference, and is such that all straight lines drawn from a cer- " tain point within the figure to the circumference are equal to one another. This point is called the centre of the circle ; and the distance from the centre to the circumference...