叠加等边三角形

import turtle
turtle.fd(100)
turtle.left(120)
turtle.fd(100)
turtle.left(120)
turtle.fd(50)
turtle.left(120)
turtle.fd(50)
turtle.right(120)
turtle.fd(50)
turtle.right(120)
turtle.fd(50)
turtle.left(120)
turtle.fd(50)
turtle.hideturtle()