 | John Playfair - 1806 - عدد الصفحات: 320
...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 drawn through the centre, and terminated both ways by the circumference. XIV. A semicircle is the figure contained by a diameter and the part... | |
 | John Aikin - 1807 - عدد الصفحات: 442
...circumference, which is every where equally distant from a point within the figure called the centre. 2. A diameter of a circle is a straight line drawn through the centre and terminated both ways by the circumference. 3. An arc of a circle is any part of the circumference. 4. The circumference... | |
 | Isaac Dalby - 1807 - عدد الصفحات: 476
...the circumference. Thus if C be the centre, CR is the radius. 51. The diameter of a circle is a right line drawn through the centre, and terminated by the circumference both ways, and therefore it is twice the radius. 52. An arc of a circle is any part of the circumference. 53.... | |
 | Sir John Leslie - 1809 - عدد الصفحات: 542
...describing line its radius, and the boundary traced by the remote end of that line its circumference. 3$. The diameter of a circle is a straight line drawn through the centre, and terminated both ways by the circumference. It is obvious that all radii of the same circle are equal to each other... | |
 | Euclid - 1810 - عدد الصفحات: 554
...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 the centre, and terminated both ways by the circumference. XVIII. A semicircle is the figure contained by a diameter and the part... | |
 | John Gummere - 1814 - عدد الصفحات: 398
...radius of a circle is a straight line drawn from the centre to the circumference, as CB, Fig. 1735. The diameter of a circle is a straight line drawn through the centre, and terminated both wajs by the circumference, as AB, Fig. 17. It divides the circle into two equal parts, called... | |
 | Jeremiah Day - 1815 - عدد الصفحات: 388
...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 the centre, and terminated both ways by the circumference. A Radius is a straight line extending from the centre to the circumference.... | |
 | John Playfair - 1819 - عدد الصفحات: 350
...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 the centre, and terminated both ways by the circumference. « XIV. A semicircle is the figure contained by a diameter and the... | |
 | William Hawney - 1820 - عدد الصفحات: 336
...if unequal, they are called irregular Polygons, or Figures. 34. The diameter of a circle is a right line drawn through the centre, and terminated by the...circumference both ways ; thus AB is a diameter of the circle. The diameter divides the surface, and circumference, into two equal parts, each of which... | |
 | Peter Nicholson - 1823 - عدد الصفحات: 210
...CENTRE of the circle. Thus, in Jig. 26, c is the centre, and cd the radius of the circle ab d. 36. The DIAMETER of a circle is a straight line, drawn...through the centre, and terminated by the circumference ; as the line ab, fig. 27. 37. A CHORD of a circle is a straight line, drawn through the circle, and... | |
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A diameter of a circle is a straight line drawn through the centre, and terminated both ways by the circumference. 
