turtle.fd(distance)
Parameters:
distance – a number (integer or float)
Move the turtle forward by the specified distance, in the direction the turtle is headed.
>>> turtle.position()
(0.00,0.00)
>>> turtle.forward(25)
>>> turtle.position()
(25.00,0.00)
>>> turtle.forward(-75)
>>> turtle.position()
(-50.00,0.00)