from turtle import *
t=Turtle()
t.speed(10)
def 卐(long):
    for i in range(4):
        t.fd(long)
        t.right(90)
        t.fd(long)
        t.right(180)
        t.fd(long)
        t.left(90)
        t.fd(long)
        t.right(90)
def 方(long):
    for i in range(4):
        t.fd(long*2)
        t.right(90)
def 等边三角形(long):
    for i in range(3):
        t.fd(long*2)
        t.right(30)
i=0
while True:
    卐(50)
    方(50)
    等边三角形(50)
    t.fd(i)
    t.left(360-i)
    i=i-1