The shortest distance between a line and a parallel plane.

1. Move the slider so that the line l is parallel to the plane 3x - y + z = 3; 2. Click to see the normal vector to the plane 3x - y + z = 3; 3. Click to see the parallel plane containing the line l; 4. Click to see the distance; 5. Use "Rotate 3D Graphics View" to view from different angles.