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How would you do it without a computer or program?
If you do not understand rotation in radians, tackle this problem in a way that you understand. There are multiple ways to determine which area the...

Start here for an idea and post any questions you have remaining

Where are you stuck? What did you try?
How would you do it if the given shape was drawn on graph paper?
Each region has some relation to it's position and the x,y values
Post the code for better...