First, we show how to use points. You see a construction area with two lines, and three tools above it, the point, the backward delete and the color tool. The backward delete tool lets you delete the last construction step, while the color tool sets the color for the next point. The point tool, of course, creates points. |
If not already done, select the point tool.
Now move the points around. Drag them with the right mouse button to some other place.
Generate a point on the intersection of the two lines. Both lines will highlight, if you approach the intersection. This point cannot be moved at all. It is fixed at the intersection. Try the the tools too! Keep the mouse over the tool for a while, and you will get a description of the tool. |