3.5. Practice Makes Perfect
Turtle Commands
Command 
What does it do? 
forward( distance )

Move forward a specified distance 
backward( distance )

Move backward a specified distance 
left(90)

Turns 90 degrees to the left (you can use any angle, not just 90!) 
right(90)

Turns 90 degrees to the right 
circle( radius )

Draws a circle with the specified radius 
goto( x, y )

Move straight to the position with coordinates (x, y). Note: the center is (0, 0) 
up()

Stop leaving a trail 
down()

Start drawing a trail 
color( c )

Set the color to c (https://trinket.io/docs/colors) 
for i in range( n ):

Repeat n times 
If you don’t remember what these commands do, give them a try below!
Let’s take another look at drawing a square. How could we rewrite it using a loop?
Let’s use what we know about loops to draw a dashed line across the entire box!
The code below draws two dashes. See if you can modify it to use a loop!
Why stop with squares? Shapes with any number of sides can be drawn using a loop!
Start with your code that draws a square. Then, change the number of times the loop
repeats and the angle that you turn each time to see if you can draw these shapes.
Try converting you dashed line into a row of circles! Let’s draw 20 circles, each with a radius of 10.
Try drawing a row of squares!
For this problem, try using two loops! One to draw each square
(same as in the first problem on this page), and another to draw
the square multiple times
Try drawing a plus sign using a loop!
If you’re not sure how to do it with a loop, try writing it out line by line first.
Once you’ve got it drawing a plus sign, see if you can put any repeated code in a loop!
Now try modifying your code from the plus sign into an asterisk!
Hint: you’ll need to change the number of repetitions and the angle that you’re turning each time
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activities on this page