import turtle

r = 20
step = 20
def polygon(n, r = 20):

    turtle.circle(r, 360, n)

for i in range(3,13):
    polygon(i,r)
    # отступ
    turtle.penup()
    turtle.right(90)
    turtle.forward(step)
    turtle.left(90)
    turtle.pendown()
    r += step


turtle.mainloop()