Select the
"Point" tool by clicking on it.
Generate a
few points by clicking at random locations in the construction window with the left
mouse button.
Move some of
the points around by dragging them with the right mouse button.
Move the
mouse over one of the lines. A "preview dot" will appear on the line.
If you left click, the preview dot becomes a new point. Drag the new
point with the right mouse button. It can only move along the line.
Move the mouse to the
intersection of the two lines. Both lines will highlight as you
approach the intersection. If you left click at the intersection, this
new point cannot be moved at all. It is fixed at the intersection.
Click the "Object color" icon so that the color changes, then create colored points in the white area
Right
click on an existing point (be careful not to move the mouse as you
click). A dialog box will open that allows you to change the point's
properties:
- Change the point's name to Q by typing "Q" in the first field.
- Change the point's shape to "X" by clicking on the "X" in the last row of icons
- Display the point's name and location by clicking on the second and third icons in the second-to-last row of icons.
- Click "OK" to make your changes take effect.
If you hold the mouse over any icon, the corresponding function will display.
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