Since the name of the blog is Node Dangles, I get several hits daily from searches on ‘Node Dangles’ and I have no information on node dangles. This post is the first in a series to change that. First let us, by us, I mean ESRI, define what a node dangle is. Their online glossary actually defines a dangling arc, a dangling node is a node (endpoint of an arc) that does the non-connecting mentioned below: