第三次作业

1.

import turtle

turtle.shape('turtle')

turtle.circle(10)
turtle.circle(20)
turtle.circle(40)
turtle.circle(60)
turtle.circle(90)

 2.

import turtle

turtle.circle(10)
turtle.up()
turtle.goto(0,-10)
turtle.down()

turtle.circle(20)
turtle.up()
turtle.goto(0,-20)
turtle.down()

turtle.circle(30)
turtle.up()
turtle.goto(0,-30)
turtle.down()

turtle.circle(40)

 3.

import turtle

turtle.forward(90)
turtle.left(144)
turtle.forward(90)
turtle.left(144)
turtle.forward(90)
turtle.left(144)
turtle.forward(90)
turtle.left(144)
turtle.forward(90)

4.

import turtle
turtle.color('yellow')
turtle.fillcolor('yellow')
turtle.begin_fill()
for i in range(5):
turtle.forward(80)
turtle.left(145)
turtle.end_fill()