The Build Primitives Disk Tab page enables the generation of Disk models by a specified dimension.
Type in the desired Radius, number of Sides, and Center point, then press the Make button. Note that the Center is the point in the Working-Volume 3D space that the center of the Disk is placed.
You can also interactively generate a Disk primitive by dragging out a bounding box in any of the Working-Volume' TOP, FRONT, or SIDE views. The specified Disk will fill the space of the bounding box. Note that the Auto checkbox must be checked to interactively draw primitives.