 | Isaac Todhunter - Spherical trigonometry - 1879 - 176 pages
...sphere. The straight line which joins any point of the surface with the centre is called a radius. A straight line drawn through the centre and terminated both ways by the surface is called a diameter. 2. The section qf the surface of a sphere made by any plane is a circle.... | |
 | J. G - 1878 - 408 pages
...of the centre, we know the position of the sphere, Two sphe.es are equal when their radii are equal. A straight line drawn through the centre and terminated both ways by the surface is called a diameter. A sphere is supposed to be engendered by the revolution of a semicircle... | |
 | Joseph Wollman - 1879 - 120 pages
...for 1877, Section I., as these two questions were given that year, (c) This definition is incomplete. A diameter of a circle is a straight line drawn through...centre, and terminated both ways by the circumference. The following statements are incorrect : — (1) If unequals be added to unequals the wholes are unequal.... | |
 | Moffatt and Paige - 1879 - 426 pages
...circumference are equal to one another. 16. And this point is called the centre of the circle. 1 7. A diameter of a circle is a straight line drawn through...centre and terminated both ways by the circumference. 1 8. A semicircle is the figure contained by a diameter and the part of the circumference cut off by... | |
 | Euclides - 1879 - 146 pages
...circumference, are equal to one another. 1 6. And this point is called the centre of the circle. 17. 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 drawn from the centre to the circumference, and is therefore half the... | |
 | Isaac Sharpless - Geometry - 1879 - 282 pages
...lines are called radii, and this point is the centre of the circle. 32. A diameter of a circle is the straight line drawn through the centre, and terminated both ways by the cuctnnference. 33. A semicircle is the figure contained by the diameter and the part of the circumference... | |
 | Isaac Todhunter - Euclid's Elements - 1880 - 426 pages
...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 drawn through...centre, and terminated both ways by the circumference. [A radius of a circle is a straight line drawn from the centre to the circumference.] 18. A semicircle... | |
 | Euclides, Frederick Burn Harvey - Geometry - 1880 - 178 pages
...therefore, 90 degrees ; an obtuse angle contains more, and an acute angle less, than 90 degrees. 16. A DIAMETER OF A CIRCLE is a straight line drawn through...centre, and terminated both ways by the circumference. Thus BAG and DAE are diameters. A straight line drawn in a circle, not through the centre, and terminated... | |
 | James Thomson - 1880 - 412 pages
...figure, called the CENTRE, are equal to each other. Any of those equal lines is called a RADIUS : and a line drawn through the centre, and terminated both ways by the circumference, is called a DIAMETER. Hence, a diameter is evidently double of a radius. XVIII. If the ends of a thread,... | |
 | Euclides - Euclid's Elements - 1881 - 236 pages
...the circle. The straight line drawa from the centre to ihe circumference, ie called the radios. 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 ths circumference cut off... | |
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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... 
