 | Isaac Todhunter - 1877 - 442 pages
...centre of the sphere. A radius of a sphere is a straight line drawn from the centre to the surface. A diameter of a sphere is a straight line drawn through...the centre and terminated both ways by the surface. A sphere is sometimes called a globe: marbles and billiard balls are familiar examples of spheres.... | |
 | Isaac Todhunter - Philosophy - 1877 - 452 pages
...radius of a circle is a straight line drawn from the centre to the circumference. A diameter of a circle is a straight line drawn through the centre and terminated both ways by the circumference. An arc of a circle is any part of the circumference. 20. In Arts. 15. ..19 we have spoken... | |
 | Edward Atkins - 1877 - 72 pages
...from the centre to the circumference is called a radius of the circle]. 1 7. A diameter of a circle is a straight line drawn through the centre, and terminated both ways by the circumference. 18. A semicircle is the figure contained by a diameter and the part of the circumference... | |
 | Euclides - 1877 - 58 pages
...anything ; and a figure is that which is inclosed by one or more boundaries. 25. A diameter of a circle is a straight line drawn through the centre, and terminated both ways liy the circumference. 26. A semicircle is a figure contained by a diameter and the part of the circumference... | |
 | 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. Let... | |
 | James Maurice Wilson - 1878 - 450 pages
...circle is a straight line drawn from the centre to the circumference. Def. 10. A diameter of a circle is a straight line drawn through the centre and terminated both ways by the circumference. Def. ir. When two straight lines are drawn from the same point, they are said to contain,... | |
 | 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 round... | |
 | Āryabhaṭa - 1878 - 100 pages
...is a circle.] VII. And this point is called the centre of the circle. VIII. [A diameter of a circle is a straight line drawn through the centre, and terminated both ways by the circumfer|nce. The straight line AC in figure : Prop. 1. is a diameter.] IX. A radius is a straight... | |
 | Joseph Wollman - 1879 - 120 pages
...these two questions were given that year, (c) This definition is incomplete. A diameter of a circle is a straight line drawn through the centre, and terminated both ways by the circumference. The following statements are incorrect : — (1) If unequals be added to unequals the... | |
 | Euclides - 1879 - 146 pages
...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 the centre, and terminated both ways by the circumference. [A radius is a straight line drawn from the centre to the circumference, and is therefore... | |
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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... 
