When putting two construction lines in a cross pattern with the origin dead center. I have no relations icons. Then I draw a 100 mm circle and dim it, I'm not defined.
But I'm following a video that shows the exact sketch and it's defined with relation icons.
youtube: Solidworks Tutorial 2 Modifying Sketches Tim Callinan.
2 sketch, very beginning if any one would like to check out my issue.