ILine.Angle Property

The angle between this line and the positive x-axis.

[Visual Basic 6.0]
Property Angle As Double

[Visual Basic .NET]
Public ReadOnly Property Angle As Double

[C#]
public double Angle {get;}

[Java]
public Double getAngle()
throws
    IOException,
    AutomationException

[C++]
HRESULT get_Angle(
  double* outAngle
);

[C++]

Parameters

outAngle [out, retval]

outAngle is a parameter of type double

Available with ArcGIS Engine, ArcGIS Desktop, and ArcGIS Server.

The following Visual Basic example gets the angle of a line and converts it to degrees :

dAngleDegree = (180 * pLine.Angle) / Pi

Where Pi = 4 * Atn(1)

EDN: ESRI Developer Network