Turns the brush's "turtle" to the right.

    Arguments:
        relative_angle - a number like 10.
            A bigger number makes the turtle turn farther to the right.

def turn_right(relative_angle):
    """Turns the brush's "turtle" to the right.

    Arguments:
        relative_angle - a number like 10.
            A bigger number makes the turtle turn farther to the right.
    """
    assert int(relative_angle) == relative_angle, "turn_right() only accepts integers, but you gave it " + str(relative_angle)

    _make_cnc_request("move.right./" + str(relative_angle))
    state['turtle'].right(relative_angle)