Arc Tool

Use the Arc tool to create a circular arc.

The Arc tool is only available if the  Cross section view tool is enabled.

Activate the tool then the first mouse click will define the centre point of the arc. Another click specifies the radius of the arc and its starting point. Move the cursor counter-clockwise to draw the arc, then click the mouse button to define the ending angle.

The new arc belongs to the group selected in the Select group drop-down list. To modify the object parameters afterwards use the Object Properties dialog.