Question: Download the code in this chapter from https://thinkpython.com/code/polygon.py .

Draw a stack diagram that shows the state of the program while executing circle(bob, radius). You can do the arithmetic by hand or add print statements to the code.

The version of arc in Section 4.7 is not very accurate because the linear approximation of the circle is always outside the true circle. As a result, the Turtle ends up a few pixels away from the correct destination. My solution shows a way to reduce the effect of this error. Read the code and see if it makes sense to you. If you draw a diagram, you might see how it works.

My Diagram- https://imgur.com/q1GIn66

I cross checked my solution with others on the internet (only 2 were available, both on Github), and they had every frame except main in reverse order to mine, but according to what the book says, mine should be correct?

Here is that Github link-https://github.com/MadCzarls/Think-Python-2e—my-solutions/blob/master/ex4/ex4.1.py

Here is the book if you want to see what it says about stack diagrams, or the version of arc in Secton 4.7- https://greenteapress.com/thinkpython2/thinkpython2.pdf

Also if possible please explain why the version of arc from polygon.py works better.

Tried to find the answer, expected to get one. I didn’t.