#### Python Turtle? Let’s Recap!

Looking at the following code can you explain the purpose of each Python Turtle instructions:

- turtle.color(“red”)
- turtle.forward(100)
- turtle.right(90)
- turtle.left(45)
- turtle.penup()
- turtle.pendown()
- turtle.goto(0,0)
- turtle.circle(50)
- turtle.setHeading(45)

#### (X,Y) Coordinates?

The canvas we are drawing on (using Python Turtle) is 400 pixels wide by 400 pixels high.

Look at the canvas below to understand how

**(x,y) coordinates**work:

#### Protractor Challenge:

A protractor is an instrument used in Maths when measuring or drawing angles.

Our challenge is to use Python to draw a protractor on screen, using all the graduations for a scale going from 0° to 180°.

To do so we will use an **iterative** algorithm based on the following flowchart:

Your task consists of using Python code to implement this flowchart using Python Turtle.

#### Extension Task #1

Improve the drawing of your protractor further by:

- adding labels (e.g. 0°, 10°, etc.) next to each graduation,
- adding smaller graduations (e.g. 5°, 15°, 25° etc. graduations).

#### Extension Task #2

Use a similar approach to draw an analogue clock using Python Turtle.