Pen block idea: What’s a circle?
Edited
Could you use the pen to draw a circle? Try out this loop and watch what it does. Did your actor draw a circle … or is it a polygon?
Make the turning angle in the loop smaller.
Make a prediction before you run your code again: Will your circle get larger or smaller?
Try changing the repeat count so that the Pen completes the circle. Hint: What’s 36 × 10?