Ring

Create a ring to be used either as a primitive or as a building block for constructing complex geometry.

On the Construct tab, in the Create Surface group, click the  Complex Surfaces icon. From the  Rings drop-down list, select  Ring.

	Centre point (C)	The centre point of the ring.
	Outer radius (R)	The outer radius of the ring.
	Inner radius (r)	The inner radius of the ring.