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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 : 16. And this point is called the centre...
Mensuration of lines, areas, surfaces, and volumes - Page xiii
by Robert Rawson - 1856

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

Euclid - Geometry - 1810 - 518 pages
...circumference, are equal to one another: XVI. A.nd this point is called the centre of the circle. XVII. A diameter of a circle is a straight line drawn through...centre, and terminated both ways by the circumference. XVIII. A semicircle is the figure contained by a diameter and the part of the circumference cut off...

## A Practical Application of the Principles of Geometry to the Mensuration of ...

Jeremiah Day - Measurement - 1815 - 388 pages
...circumference. A semi-circle is half, and a quadrant one fourth, of a circle. ,*., , • •('•• II. A Diameter of a circle is a straight line drawn through...centre, and terminated both ways by the circumference. A Radius is a straight line extending from the centre to the circumference. A Chord is a straight line...

## A Treatise on Surveying: Containing the Theory and Practice : to which is ...

John Gummere - Surveying - 1817 - 206 pages
...a circle is a įtraight line drawn from the centre to the circumference, as С В, Fig. 17. 35. The diameter of a circle is a straight line drawn through...centre, and terminated both ways by the circumference, as AE, Fig. 17. It divides the circle into two equal parts, called semicircles. 36. A quadrant is one...

## Elements of Geometry and Plane Trigonometry: With an Appendix, and Copious ...

Sir John Leslie - Geometry - 1817 - 454 pages
...line its radius, and the boundary traced by the remote end of that line its circumference. 35. The diameter of a circle is a straight line drawn through...centre, and terminated both ways by the circumference. It is obvious that all radii of the same circle are equal to each other and to a semidiameter. It likewise...

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

Euclid, John Playfair - Circle-squaring - 1819 - 348 pages
...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 line drawn through...centre, and terminated both ways by the circumference. « XIV. A semicircle is the figure contained by a diameter and the part of the circumference cut off...

## The new practical gager

Matthew Iley - 1820 - 512 pages
...circumference, is equidistant from every part of the curve ; as C. 13. The diameter of a circle is a line drawn through the centre, and terminated both ways by the circumference ; as AB. 14. The radius of a circle is half the diameter ; as BC. 15. Any part of the circumference...

## The First Six Books with Notes

Euclid - 1822 - 179 pages
...another. 16., And this point is called the centre of the circle. 17.. A diameter of a circle is a right line- drawn through the centre, and terminated both ways by the circumference. 18. A radius of a circle is a right line drawn front the centre to the circumference. 19. A semicircle...

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

Robertson Buchanan - Machinery - 1823 - 442 pages
...centre to the circumference. The word radii is used, when more than one such line is spoken of. 58. The diameter of a circle, is a straight line drawn through...centre, and terminated both ways by the circumference. 59- The arc of a circle is any part of its circumference. 60. A chord of an arc, is a straight line...