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The code works for 4 sided shapes (90deg turns)
But doesn't work for different shapes with different angles.

Given an angle and an x,y location, can you compute a future x,y location for a...

What angle does it turn? How does that compare to the correct amount to turn?

Way too many classes in the zip file. Can you reduce it to one file that shows the problem?

Can you explain your algorithm for computing the values needed to draw the shapes?

Without the SimpleTurtle class definition this code can not be compiled