Provides access to the coordinates of a line segment in the form of Well Known Structures (WKS).
Product Availability
Available with ArcGIS Engine, ArcGIS Desktop, and ArcGIS Server.
Members

Name 
Description 

Angle 
The angle between this line and the positive xaxis. 

Dimension 
The topological dimension of this geometry. 

Envelope 
Creates a copy of this geometry's envelope and returns it. 

FromPoint 
The 'from' point of the curve. 

GeometryType 
The type of this geometry. 

GeoNormalize 
Shifts longitudes, if need be, into a continuous range of 360 degrees. 

GeoNormalizeFromLongitude 
Normalizes longitudes into a continuous range containing the longitude. This method is obsolete. 

GetSubcurve 
Extracts a portion of this curve into a new curve. 

IsClosed 
Indicates if 'from' and 'to' points (of each part) are identical. 

IsEmpty 
Indicates whether this geometry contains any points. 

Length 
The length of the curve. 

Project 
Projects this geometry into a new spatial reference. 

PutCoords 
Sets this line's endpoints to be 'from' and 'to'. 

PutWKSCoords 
From and To become the new endpoints of this line. Any existing attributes are deleted. 

QueryCoords 
Copies the endpoints of this line to 'from' and 'to'. 

QueryEnvelope 
Copies this geometry's envelope properties into the specified envelope. 

QueryFromPoint 
Copies this curve's 'from' point to the input point. 

QueryNormal 
Constructs a line normal to a curve from a point at a specified distance along the curve. 

QueryPoint 
Copies to outPoint the properties of a point on the curve at a specified distance from the beginning of the curve. 

QueryPointAndDistance 
Finds the point on the curve closest to inPoint, then copies that point to outPoint; optionally calculates related items. 

QueryTangent 
Constructs a line tangent to a curve from a point at a specified distance along the curve. 

QueryToPoint 
Copies the curve's 'to' point into the input point. 

QueryWKSCoords 
Returns the (x,y) coordinates of this line's endpoints. 

ReverseOrientation 
Reverses the parameterization of the curve ('from' point becomes 'to' point, first segment becomes last segment, etc). 

SetEmpty 
Removes all points from this geometry. 

SnapToSpatialReference 
Moves points of this geometry so that they can be represented in the precision of the geometry's associated spatial reference system. 

SpatialReference 
The spatial reference associated with this geometry. 

ToPoint 
The 'to' point of the curve. 
Inherited Interfaces
Interfaces 
Description 
ILine 
Provides access to members that identify a straight line segment and defines its properties. 
ICurve 
Provides access to properties and methods of all 1 dimensional curves (polylines, segments, boundaries of polygons, etc.). 
IGeometry 
Provides access to members that describe properties and behavior of all geometric objects. 
Classes that implement ILine2
Classes 
Description 
Line 
A 2D straight line between a pair of 2D endpoints; can optionally have height, measure and ID attributes at each endpoint. 