Catia+v5+sketch+tools - Best

Leo realized he had some overlapping construction lines. Instead of deleting and redrawing, he used the (the "eraser" icon). With a double-click, he snipped away the excess segments, leaving a clean, closed loop. 5. The Truth Teller: Sketch Analysis

When active, CATIA automatically applies constraints like parallelism, tangency, or horizontality as you draw. Dimensional Constraints: catia+v5+sketch+tools

Use the Constraint Analysis tool (Magnifying glass over a chain link). It lists all constraints. Find the conflicting one (marked with a red X) and delete it. Common conflict: A "Horizontal" constraint and a "Perpendicular" constraint on the same line. Leo realized he had some overlapping construction lines