Answer: Turtle Challenge #156

Here’s what the code from Turtle Challenge #156 draws. This picture was made by running the code for real.

The answers

How many points will the star have? 9 points. The turtle draws 9 lines and makes a sharp point at every turn.

How far does the turtle turn altogether? 9 × 80 = 720 degrees. That’s 2 whole turns, so the star closes up neatly.

How the code works

Turning by a big angle like 80 degrees makes the turtle cross back over its own lines, which makes a star instead of a plain shape. Because 9 × 80 is an exact number of full turns (2), the turtle ends up back at the start.

import turtle

t = turtle.Turtle()
t.speed(0)
t.pensize(3)
t.pencolor("deeppink")

for point in range(9):
    t.forward(200)
    t.left(80)

t.hideturtle()
turtle.done()