import turtle
turtle.left(90)
k = 5
for i in range(5):
    turtle.forward(8*k)
    turtle.right(60*k)
    turtle.forward(8*k)
    turtle.right(120*k)
turtle.up
for x in range(10):
    for y in range(10):
        turtle.goto(x*k, y*k)
        turtle.dot(5)