Google Books

The radius of a sphere is a straight line, drawn from the centre to any point of the surface ; the diameter, or axis, is a line passing through this centre, and terminated on both sides by the surface.

A Series on Elementary and Higher Geometry, Trigonometry, and Mensuration ... - Page 7
by Nathan Scholfield - 1845
Full view - About this book

Schultze and Sevenoak's Plane and Solid Geometry

Arthur Schultze, Frank Louis Sevenoak - Geometry - 1913 - 484 pages

...which are equally distant from a point. The fixed point is called the center of the sphere. 694. DBF. The radius of a sphere is a straight line drawn from the center to any point in the surface. 695. DBF. The diameter of a sphere is a straight line passing through...

Full view - About this book