No, because there is no such thing as the celestial sphere. So there is no inner surface of a celestial sphere.
it is a sphere because it felt like it
It is something that is sphere-like, but not a PERFECT sphere.
yes the moon is in the shape of a sphere
The adjective spherical corresponds to the noun sphere.
A sphere has an infinite number of planes of symmetry. The plane must include the center of the sphere, but it can tilt at any angle. The question is the same as asking "How many planes can be drawn through one point ?" The answer is: An infinite number. And as long as the point is the center of the sphere, each plane is a plane of symmetry of the sphere.
stratosphere commrade
Not necessarily. A sphere is a "space" figure, but is not made up of planes.
Parallel lines (as opposed to planes) will not divided a sphere into portions.
There are many possible answers. Some are: A sphere or ellipsoid sliced by two planes A cone sliced by two planes A toroid (doughnut) with a wedge cut out An infinite circular prism sliced by two planes.
There are many possible answers.For example, a sphere or a cone intersected by two planes.
A sphere has no plane surface. But if we consider a infinitesimal small surface of sphere then we have a plane surface and this way we have infinite planes on the sphere. Let us take the example of earth: earth is a large sphere and to human beings, so small as compared to earth, earth looks like a plane surface which is actually not reality. The same case is with the circle, circle is a closed figure which has no sides but in other way it can be considered as a polygon of infinite sides.
Many solids. Some are: A sphere intersected by two planes, An ellipsoid intersected by two planes, Any blob intersected by two planes, A toroid (doughnut) with a wedge removed, A double-cone intersected by two planes, A cylinder.
There are many possible answers: A cylinder A cone sliced by two planes perperndicular to its axis A toroid (doughnut) sliced by a plane vertical to its axis. A sphere sliced by two planes An ellipsoid sliced by two planes A paraboloid sliced by two planes etc.
zone
it depends on what kind of 3D shape you want. example= A sphere has an infinite amount of symmetry lines
There are infinitely many. For example, any sphere, ellipsoid, cone, toroid, cordoid etc that is intersected by one or more planes.