Final answer:
The Skew or Shear tool is used by designers to skew objects around a pivot point or center of rotation.
Step-by-step explanation:
The transformation tool used by designers to skew objects around a fixed point is known as the Skew or Shear tool. When you designate a point as being fixed and use that point to measure the motion of surrounding objects, this point is often referred to as the pivot point or center of rotation. For instance, in graphic design software, when a CD image is manipulated to rotate around its center, each point on the CD will travel along a circular path, maintaining its distance from the center, which acts as the pivot point for the rotation.