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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 ... - Σελίδα 3
των John Playfair - 1806 - 311 σελίδες
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## The Elements of Euclid: The Errors, by which Theon, Or Others, Have Long Ago ...

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...extremity of any thing." XIV. A figure is that which is inclofed by one or more boundaries. XV. Book I. A circle is a plane figure contained by one line, which is called the circumference, and is fuch that all ftraight lines drawn from a certain point within the figure to the circumference, are...

## Instructions Given in the Drawing School Established by the Dublin Society ...

Joseph Fenn - 1769 - 524 σελίδες
...magnitude. A DEFINITIONS. XIV. Figure, is that which is inclofed by one or more boundaries. Fig. 10. XV. A Circle, is a plane figure contained by one line, which is called the circumference, and is fuch that all ftraight lines (CB, CD,) drawn from a certain point (C) within the figure to the circumference,...

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

Robert Simson - 1775 - 534 σελίδες
...extremity of any thing." XIV. A figure is that which is inclofed by one or more boundaries. XV. XV. . A circle is a plane figure contained by one line, which is Called the circumference, and is fuch that all ftraight lines drawn from a certain point within the figure to the circumference, are...

## The First Six Books: Together with the Eleventh and Twelfth

Euclid - 1781 - 552 σελίδες
...any thing." At. V« A figure is that which is inclbfed by one or more boundaries XV. Book I. A cirele is a plane figure contained by one line, which is called the circumference, and is fuch that all ftraight lines drawn from a certain point within the figure to the circumference, are...

## Observations on the Nature of Demonstrative Evidence: With an Explanation of ...

Thomas Beddoes - 1793 - 196 σελίδες
...confider fuch angles, with a view to take their relative dimenfions accurately. DEFINITION xv and xvi. A circle is a plane figure contained by one line, which is called the circumference, and is fuch, that all Jlraight lines drawn from a certain point, ivitbin the figure to the circumference,...

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

Alexander Ingram - 1799 - 374 σελίδες
...XIII. Omitted. XIV. A figure is that which is inclofed by one or more boundaries. XV. XV. BOOK. I. A circle is a plane figure contained by one line, which is called the circumference, and is fuch that all ftraight lines drawn from a certain point within the figure to the circumference, are...

## The Elements of Euclid: Also the Book of Euclid's Data ...cor. viz. The ...

Robert Simson - 1804 - 528 σελίδες
...thing." XIV. A figure is that which is inclofed by one or more boundaries XV. Book A circle is a plain figure contained by one line, which is called the circumference, and is fuch that all ftraight lines drawn from a certain point within the figure to the circumference, are...

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

Robert Simson - 1806 - 548 σελίδες
...extremity of any thing." XIV. A figure is that which is enclosed by onew more boundaries. XV. Book I. A circle is a plane figure contained by one line, which is called l •»•j< the circumference, and is such that all straight lines drawn from a certain point within...

## A Practical Treatise of Perspective, on the Principles of Dr. Brook Taylor

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...properties of right lines and angles, it will be neceflary to fpeak of the circle. A CIRCLE is a plain figure contained by one line, which is called the circumference, and is fuch, that all ftraight lines drawn from a certain point within the figure to the circumference, are...

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

Robertson Buchanan - 1808 - 216 σελίδες
...which meeting do not lie in one line. 2. A triangle is a figure contained by three straight lines. 3. 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. 4. The radius of a circle, is a right line drawn...