Specifies the start point of the first extension line.
See Also | Example
The object or objects this property applies to.
Variant (three-element array of doubles);
A 3D coordinate representing the start point of the first extension line.
The ExtLine1StartPoint and ExtLine2StartPoint properties are equal to the FirstEndPoint and SecondEndPoint parameters from the AddDimAngular method. The extension lines are originally drawn from the FirstEndPoint and SecondEndPoint locations to the intersection of the dimension line. AutoCAD draws the dimension line as an arc between the extension lines.