[R-sig-teaching] plot an angle of 450 degrees and adding a circular arrow to it

[Steven Stoline]

Dear All:

I am wondering if someone can show me how to plot an angles around the
center of a unit circle with x-y vertices added to it.

Also how to add arrows showing the size and the direction of angle(s).

Examples: 135 degrees and 450 degrees angles.

with many thanks
Steven

-- 
Steven M. Stoline
1123 Forest Avenue
Portland, ME 04112
sstoline at gmail.com

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