第一次作业

import turtle
turtle.setup(800,600,400,400)
turtle.penup()
turtle.pencolor("black")
turtle.pensize(8)
turtle.pendown()
turtle.fd(160)
turtle.penup()
turtle.left(120)
turtle.pendown()
turtle.fd(160)
turtle.penup()
turtle.left(120)
turtle.pendown()
turtle.fd(160)
turtle.penup()
turtle.left(120)
turtle.penup()
turtle.fd(80)
turtle.left(60)
turtle.pendown()
turtle.fd(80)
turtle.left(120)
turtle.fd(80)
turtle.left(120)
turtle.fd(80)