4.画叠加的等边三角形

 1 import turtle
 2 turtle.screensize(800,800,"red")
 3 turtle.setup(800,500,100)
 4 turtle.penup()
 5 turtle.fd(-100)
 6 turtle.pendown()
 7 turtle.pensize(7)
 8 turtle.pencolor("green")
 9 turtle.seth(-40)
10 turtle.fd(90)
11 turtle.right(60)
12 turtle.fd(90)
13 turtle.right(120)
14 turtle.fd(180)
15 turtle.right(120)
16 turtle.fd(180)
17 turtle.right(120)
18 turtle.fd(90)
19 turtle.right(60)
20 turtle.fd(90)
21 turtle.right(120)
22 turtle.fd(90)
23 turtle.done()