Answer:TORUS
Step-by-step explanation:In calculation, a torus is a surface of transformation produced by rotating a circle in three-dimensional space about a pivot that is coplanar with the circle. In the event that the pivot of insurgency doesn't contact the circle, the surface has a ring shape and is known as a torus of upset. In the event that the pivot of transformation is digression to the circle, the surface is a horn torus. If the pivot of transformation goes twice through the circle, the surface is an axle torus. If the pivot of upheaval goes through the focal point of the circle, the surface is a savage torus, a twofold covered circle. If the spun bend isn't a circle, the surface is a connected shape, a toroid.
