John,
I have not tried Euclidean, but I am looking for a work-around for 
IntersectNodes().
A "feature change" in the operation of IntersectNodes() from version 5.0 to 
5.5 is disturbing my application.

In 5.0 the object returned from a pair of adjacent polygons is a polyline 
along the shared line segments.   Version 5.5 returns a polyline containing 
the same points, but the points are ordered from west to east.

If the shared segments trend east-west, no problem is seen.
In a north-south trending line, the returned object is a useless zigzag.

Email me for an example.

Dennis Coady
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