3.叠加等边三角形

import turtle
turtle.pensize(1)
turtle.pencolor("black") #画笔黑色
turtle.left(60)
#绘制三角形#
for _ in range(3): 
    turtle.forward(200) 
    turtle.right(120)  
#调整
turtle.penup()
turtle.forward(100)
turtle.right(120)
turtle.pendown()
#绘制三角形#
for _ in range(3): 
    turtle.forward(100) 
    turtle.left(120)