1.

import turtle

turtle.circle(30)

turtle.circle(40)

turtle.circle(50)

turtle.circle(60)

turtle.circle(70)

2.

import turtle

turtle.shape('turtle')

turtle.circle(30)

turtle.up()

turtle.goto(0,-30)

turtle.down()

turtle.circle(70)

turtle.up()

turtle.goto(0,-70)

turtle.down()

turtle.circle(110)

turtle.up()

turtle.goto(0,-110)

turtle.down()

turtle.circle(150)

3.

import turtle

for i in range(5):

turtle.forward(80)

turtle.right(144)

4.

import turtle

turtle.color('yellow')

turtle.begin_fill()

for i in range(5):

turtle.forward(80)

turtle.right(144)

turtle.end_fill()