 | Charles Austin Hobbs - Geometry, Solid - 1921 - 216 pages
...volume of a cone whose surface is n times as large? BOOK IX THE SPHERE A sphere is a closed surface, all points of which are equally distant from a point within called the centre. Accordingly, the locus of a point in space at a given distance from a given point is a sphere. NOTE.... | |
 | 1885 - 638 pages
...quantity. In the heading of this series of articles, " Circle " does not suggest the rim of a wheel, or a curved line all the points of which are equally distant from the center around which it is drawn, but rather a group of sciences, just as " social circle," and... | |
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CIRCLE is a plane figure bounded by a curved line, all the points of which are equally distant from a point within called the centre; as the figure ADB E. 
