FIGURE 1.19 A sketch of four lines
FIGURE 1.20 Dragging an endpoint
If you add a parallel relation between opposing lines, they now act differently, as shown in Figure 1.21. A parallel relation is added by selecting the two lines to be made parallel and selecting Parallel from the PropertyManager panel. You can also select the Parallel relation from the context bar that pops up in the graphics window when you have both lines selected.
You can read more about the PropertyManager in Chapter 2, Navigating the SolidWorks Interface..
FIGURE 1.21 Dragging an endpoint where lines have relations
Next, a second parallel and a horizontal relation are added, as shown in Figure 1.22. If you are fol- lowing along by re-creating the sketch on your computer, you will notice that one line has turned from blue to black.