A circle (2D) or a sphere (3D)
A sphere
A rounded figure that has all surface points equidistant from the center is a sphere. A common object that is a sphere is a tennis ball.
sphere
A sphere.
sphere
A sphere is a closed geometric figure with every location on it's surface equidistant from and infinity small center point.
A sphere
A rounded figure that has all surface points equidistant from the center is a sphere. A common object that is a sphere is a tennis ball.
sphere
A circle
A sphere.
sphere
A circle is a round figure with all points equidistant from the center. Radii of equal length is the main defining characteristic of a circle.
Geometry.a.a solid geometric figure generated by the revolution of a semicircle about its diameter; a round body whose surface is at all points equidistant from the center. Equation: x 2 + y2 + z2 = r2.b.the surface of such a figure; a spherical surface.or a "3D form" of a circle
That would be a circle or a sphere. sphere.
Math
A sphere would fit the given description.