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Select
the (Center + point) tool by clicking on the icon or typing "c".
Create a circle by clicking first at the center, then at the location
of a point on the circle.
Try to duplicate the given design. To see
how it works, select the Move tool (or type "m"), and move one of the highlighted points. Then follow these steps:
- First create a fairly small circle near the middle of the
construction window. Right click on the circle's center to open the
"Edit Point" dialog. Name the center "C", and select the "Show object
name" icon (second icon in the second-to-last row). Similarly, name the
point on the circle "A", and cause the name to display.
- Create a circle with center A that contains C.
- The
circles you have created have two intersections. Continuing with
the Circle tool, click on one of the intersections (note that both
circles will highlight when your mouse is in the right position). Then
create a circle that passes through C. Do the same with the other
intersection
- Continue in this manner until the design is finished.
Move
the window left, right, up, or down by using the Arrow keys on the
keyboard. Zoom in or out by typing '+' or '-', or by using the mouse
wheel.
Experiment!
The circles in the design have many intersections that are not marked
by points. Create circles centered at these points that pass through
points you've already created. See if you can extend the design: there
are several different ways to do so.
If you got lost, have a look on this page.
This ends our first tutorial!
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