import turtle, math

def spiral(t, n, scale):
	for i in range(1, n+1):
		t.forward(math.sqrt(i)*scale)
		t.left(90)
		t.forward(1*scale)
		beta = math.atan2(math.sqrt(i),1)
		gamma = 180 - math.degrees(beta)
		t.left(gamma)
		t.forward(math.sqrt(i+1)*scale)
		t.left(180)
	return()
#----

alice = turtle.Turtle()
spiral(alice, 10, 25)