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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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## Euclid's plane geometry, books iii.-vi., practically applied; or, Gradations ...

Euclides - 1861 - 464 σελίδες
...is a plane figure contained by one line, which is called the circumference, and is such that all st. lines drawn from a certain point within the figure to the circumference, are equal to one another. Ax. 1. Things which are equal to the same thing, are equal to one another. Def. 7, IV. A st. line is...

## The school Euclid: comprising the first four books, by A.K. Isbister

Euclides - 1862 - 172 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. XVIII. A semicircle is the figure contained by a diameter and the part...

## Euclid's Elements of geometry, books i. ii. iii. iv

Euclides - 1862 - 140 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. 16. And this point is called the centre of the circle. 17. A diameter of a circle is a straight line...

## The elements of plane geometry; or, The first six books of Euclid, ed. by W ...

Euclides - 1863 - 122 σελίδες
...piano 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 the centre, and...

## Euclid's Elements of geometry, the first four books, by R. Potts. Corrected ...

Euclides - 1864 - 262 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...center of the circle. XVII. A diameter of a circle is a straight line drawn through the center, and terminated both ways by the circumference. XVHI. A semicircle...

## The school edition. Euclid's Elements of geometry, the first six books, by R ...

Euclides - 1864 - 448 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 center of the circle. XVII. A diameter of a circle is a straight line...

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

Robert Potts - 1865 - 528 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...

## The College Euclid: Comprising the First Six and the Parts of the Eleventh ...

Euclides - 1865 - 402 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 circl*. XVII. A diameter of a circle is a straight line drawn through the centre, and...

## The Constructive arithmetic

James A. Christie - 1865 - 454 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 diameter of a circle is a straight line passing...

## Outlines of Geometry ...

Walter Marsham Adams - 1866 - 114 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 " (1.) (AB=AP.) The definitions correspond exactly....