import turtle
import math

turtle.shape('turtle')

def RerPolygon(r,n):
        b = 180*(1-2/n)
        turtle.right(180-b/2)
        a = 2*r*math.sin(math.pi/n)

        for i in range(n):
            turtle.forward(a)
            turtle.right(180-b)
r = 10
n = 3
step = 0

for i in range (10):
    turtle.penup()
    turtle.seth(90)
    turtle.forward(step)
    turtle.pendown()
    RerPolygon(r, n)

    n += 1
    step += 5
    r += step