Default UI Menu: Modes/Snaps/Use Workplane Intersections
Ribbon UI Menu:
Snaps to intersection curves between 3D objects and the current workplane. (For information on workplanes,
- The workplane must be displayed, and intersection lines must be displayed as well .
2. Activate the Workplane Intersections snap along with the snaps you want to use on the intersection lines and curves. In this case Vertex snap is active, and you can snap to an endpoint of the intersection line.