A Square Spiral
Draw this picture · Intermediate · about 6 min
Draw a square spiral of 20 lines. The turtle starts in the center, facing right. The first line is 10 long and each line is 10 longer than the one before, so the last line is 200 long. After every line, turn left by 90 degrees.
Run your program to see it here.
import turtle
t = turtle.Turtle()
t.forward(10)
The solution opens after your first Check.