import turtle
from math import sin
from math import pi

def polygon():
    for i in range(x):
        turtle.forward(y)
        turtle.left(360 / x)

turtle.shape('turtle')
x = 3
r = 28.867513459481
y = r * (2 * sin(pi / x))

for i in range(30):
    polygon()
    turtle.right(90)
    turtle.penup()
    turtle.forward(7)
    turtle.pendown()
    turtle.left(90)
    x += 1
    r += 7