#equilateral triangle
from turtle import *
forward(100)
right(120)
forward(100)
right(120)
forward(100)

mainloop()

#square
from turtle import *
forward(100)
right(90)
forward(100)
right(90)
forward(100)
right(90)
forward(100)
mainloop()

#pentagon
from turtle import *
forward(100)
right(72)
forward(100)
right(72)
forward(100)
right(72)
forward(100)
right(72)
forward(100)

mainloop()

#hexagon
from turtle import *
forward(100)
right(60)
forward(100)
right(60)
forward(100)
right(60)
forward(100)
right(60)
forward(100)
right(60)
forward(100)

mainloop()

#octagon
from turtle import *
forward(100)
right(45)
forward(100)
right(45)
forward(100)
right(45)
forward(100)
right(45)
forward(100)
right(45)
forward(100)
right(45)
forward(100)
right(45)
forward(100)


mainloop()

#star
from turtle import *
for i in range(5):
    forward(100)
    right(144)
mainloop()

#circle
from turtle import *
width(10)
circle(180)