 | Robert Simson - Conic sections - 1809 - 220 pages
...point C which bise.cts the straight line hetween the foci, is named the centre of the ellipsis. IV; A straight line passing through the centre, and terminated both ways by the ellipsis, is named a diameter ; and the points where a diameter meets the ellipsis, are named the vertices... | |
 | John Dougall - 1810 - 734 pages
...distance between either focus and the centre, as EH or FH, is termed the excentricity of the ellipse. A straight line passing through the centre, and terminated both ways by the ellipse, is a diameter, and its extremities are termed vertices. The diameter which passes through... | |
 | John Dougall - 1810 - 554 pages
...centre to the circumference, is called a radius, as CA, CB, CH, and CD, in fig. 22 ; and any right line passing through the centre, and terminated both ways by the circumference, is called a diameter, as ACD, which is double the length of the radius, for AC being equal to CD, the... | |
 | Francis Nichols - Plane trigonometry - 1811 - 162 pages
...its diameter, which remains unmoved, and is called the axis of the sphere. 2. A diameter of a sphere is a straight line passing through the centre, and terminated both ways by the convex surface. 3. The circles of the sphere are of two denominations, great circles, and small circles.... | |
 | Charles Butler - Mathematics - 1814 - 528 pages
...and terminated both ways by the curve, is called THE MINOR AXIS d. Thus EK is the minor axis. 42. Any straight line passing through the centre, and terminated both ways by the curve, is called A DIAMETER. Thus BX is a diameter of the ellipse. c It is also named The transverse... | |
 | Robert Simson - Conic sections - 1817 - 298 pages
...point C which bisects the straight line between the foci, is named the centre of the ellipsis. IV. A straight line passing through the centre, and terminated both ways by the ellipsis, is named a diameter ; and the points where a diameter meets the ellipsis, are named the vertices... | |
 | Rev. John Allen - Astronomy - 1822 - 516 pages
...bounding line (ADBA), is called its circumference or periphery. 13. A diameter of a circle, is a right line, passing through the centre, and terminated both ways by the circumference, (as AB). 14. A radius of a circle is a right line, drawn from the centre to the circumference, (as... | |
 | Thomas Curtis - Aeronautics - 1829 - 814 pages
...called the radii of the circle. The circumference itself is also often called a circle. Fig. 20. 31. The DIAMETER of a circle is a straight line passing...centre, and terminated both ways by the circumference. 32. An ARC of a circle is any part of its circumference. Fig. 21. 33. A CHORD is a straight line joining... | |
 | John Bonnycastle - Geometry - 1829 - 256 pages
...the figure, every where equally distant from the convex surface of it. 10. The diameter of the sphere is a straight line passing through the centre, and terminated both ways by the convex superficies. 11. A circular spindle is a solid generated by the revolution of a segment of a... | |
 | Pierce Morton - Geometry - 1830 - 584 pages
...the circumference is called the ra. diux, or, sometimes, the semidiameter, because it is the half of a straight line passing through the centre and terminated both ways by the circumference, which straight line is called a diameter. The point ะก is the centre of the circle ABD ; AB is a diameter... | |
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The diameter of a circle is a straight line passing through the center, and terminated, both ways, by the circumference. 
