appendix fturtle methods method description standard modelogo-mode east north north east west south south west example (for turtle instance named turtle)turtle setheading( turtle heading( turtle shape(name=noneset turtle shape to shape with given name return current shapename optional argumentname stringwhich is valid shapename set turtle shape to shape with given name orif name is not givenreturn name of current shape shape with name must exist in the turtlescreen' shape dictionary initially there are the following polygon shapes'arrow''turtle''circle''square''triangle''classicto learn about how to deal with shapes see screen-method register_shape example (for turtle instance named turtle)turtle shape('arrowturtle shape("turtle"turtle shape('turtleturtle showturtle(makes the turtle visible aliasesst example (for turtle instance named turtle)turtle hideturtle(turtle showturtle(turtle speed(speed=nonereturn or set the turtle' speed optional argumentspeed an integer in the range or speedstring (see belowset the turtle' speed to an integer value in the range if no argument is givenreturn current speed if input is number greater than or smaller than speed is set to this copy belongs to 'acha