This property configures an initial angle for this object's arc, in degrees. The accepted interval for this property ranges from 0 (zero) to 359. Arc's style and shape also depend on the ArcEndAngle and ArcStyle properties. The default value of this property is 0 (zero). The next script contains an example of using this property.

Sub CommandButton9_Click()
  Screen.Item("Arc1").ArcBeginAngle = 12
End Sub