Full Circle Protractors

A B Cron
Angles, Circle
1) Standard Radian Measures based on fractional parts of π. (StdRads) 2) Degree Measures based on the degree equivalents of above. (DegMks) 3) Decimal Radian Measures where 1 radian = 57.296° (DecRads) Check Boxes for 1 & 2 can be both checked as the correlate well. The DecRads check box is best displayed alone.
There is a classroom radian student protractor called the [url=http://www.proradian.net/]ProRadian[\url]; there is a Unrolling a Circle video available. Thanks, Jennifer Silverman jen@proradian.net