Find the equation of a 3D figure matching each of the descriptions below:a. A set of points equidistant from the origin.b. A plane parallel to the xy-plane.c. A plane parallel to the yz-plane.d. A plane parallel to the xz-plane.e. A point on the x-axis in 3D space.f. A point on the y-axis in 3D space.g. A point on the z-axis in 3D space.h. A plane centered at the origin with normal vector