Lines & Nodes.shapr (460 KB)
File encl. In Ss1 there are four triangles. Three of these have extra node(s) interior to a line that defines a triangle. I don’t know how these originated. If I Delete a problem line, the nodes remain after the Delete operation. Ss2 If I redraw the lines, the nodes return in same places and we are back to Ss1.
Why & what to do to correct?