If you want to draw a square, you can simply draw a line and turn 90 degrees four times:
DRAW 50 RIGHT 90 DRAW 50 RIGHT 90 DRAW 50 RIGHT 90 DRAW 50 RIGHT 90(Draw it)
Using the "REPEAT...NEXT" structure, you can do it more easily like this:REPEAT 4 DRAW 50 RIGHT 90 NEXT(Draw it)
If you want to change how big the square is, you only need to change the number "50" in one place (instead of four places!) Imagine if you had 20-sided shapes! Using loops helps keep your programs from getting huge!
REPEAT 20 DRAW 50 RIGHT 18 NEXT(Draw it)
Say you want to draw ten squares. Instead of entering some of the code above ten times, you can just put it in a loop:
REPEAT 10 REPEAT 4 DRAW 50 RIGHT 90 NEXT RIGHT 36 NEXT(Draw it)