Arc (Center and Radii Points)
Draw to the 3D sketch the Arc line.
- On the  tab, in the Lines group, click tab, in the Lines group, click Arc. Arc.
- Click a center point.
- Select 2 arc points.
- Select Confirm.
From the context-sensitive menu
- Select the context-sensitive   Center Point +2 Circle Points. Center Point +2 Circle Points. 
- Click a center point (A) for the arc.
- Click the start point of the arc (B).
- Click the end point of the arc (C).
- Select Confirm.
Note: 
  - Instead of clicking a point, you can enter the point coordinates in a dialog box.
- You can edit the line properties both before and after drawing the line.
- The Sketcher will add the graphical symbols of the geometric constraints.
