Sphere
object · 1 work · 4 mentions · 8 anchored passages
sphere · sphere ABC · sphere DEF · greater sphere · lesser sphere · sphere GHK · spheres · the given sphere · the sphere ABC · the sphere DEF
in the texts
Elements
A solid figure bounded by a surface every point of which is equidistant from a center; the subject of the culminating propositions on inscribing polyhedra and on the ratio of spheres.
Therefore AX is greater than AZ;
Let the spheres be cut by any plane through the centre;
But the sphere ABC is greater than the polyhedron in it;