Challenge 05: Play with Hidden Objects
- Gerry Stahl
Take control and construct some lines and segments with some points on them. Note that “segments” are different from “lines.” Lines continue indefinitely beyond the points that define them. The segment tool, line tool and ray tool are together on the tool bar. Click on the little arrow to select the tool you need. Notice how: • Some points can be dragged freely, • Some can only be dragged in certain ways (we say they are partially “constrained”) and • Others cannot be dragged directly at all (we say they are fully “dependent”). The dependencies are still there if the objects are hidden, even when the hidden objects are dragged.