叠加三角形绘制

import turtle
>>> turtle.right(60)
>>> turtle.forward(200)
>>> turtle.right(120)
>>> turtle.forward(200)
>>> turtle.right(120)
>>> turtle.forward(200)
>>> turtle.penup()
>>> turtle.forward(-100)
>>> turtle.pendown()
>>> turtle.right(60)
>>> turtle.forward(100)
>>> turtle.right(120)
>>> turtle.forward(100)
>>> turtle.right(120)
>>> turtle.forward(100)
>>> turtle.done()