Calculates lines that are tangential to both the first and the second curve. Returns an array of 2D points, where each pair of points represent a line. The number of points is always even. Implemented for circles or arcs only.

public static GeoPoint2D[] TangentLines(
	ICurve2D first,
	ICurve2D second
)

Public Shared Function TangentLines ( _
	first As ICurve2D, _
	second As ICurve2D _
) As GeoPoint2D()

public:
static array<GeoPoint2D>^ TangentLines(
	ICurve2D^ first, 
	ICurve2D^ second
)