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Topic:  geom construction software with compass > arcs, not circles 
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Subject:  RE: geom construction software with compass > arcs, not circles 
Author:  PeterA 
Date:  Sep 23 2011 
solve your problem if you could draw an arc with center P, passing through Q,
and extending t = 10 degrees to either side of Q. To do this, use the Transform
menu.
(1) Select P and do Transform > Mark Center
(2) Select Q and do Transform > Rotate 10 degrees about center P (creating
R)
(3) Select Q and do Transform > Rotate 10 degrees about center P (creating
S)
(4) Select R, Q, and S and then Construct > Arc Through 3 Points
You can make a tool that will do this. Of course, you can replace 10 degrees by
whatever you want, possibly even introducing a usersettable parameter. Please
let us know if this works for you.
 
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