Dynamic Line Art
Use the buttons to control the animation and color. Press clear at any time to start your picture from scratch.
All parts of this diagram are controlled by a slider "a" with values from 0 to 10. Create points with coordinates of (a,0) and (0,10-a) for example, connect with a line segment, and turn the trace on for this line segment. Drag the slider to watch your diagram appear, or control the slider with a button as shown in this project. Other fun variations for endpoints include (0,10-a) with (a,a), or (a-10,10-a) with (a,a).