### First Forward Into Logo 1: Square Five

A Short introduction to using Logo. This is the first in a twelve part series.

### LOGO Challenge 1 - Star Square

Can you use LOGO to create this star pattern made from squares. Only basic LOGO knowledge needed.

### LOGO Challenge 5 - Patch

Using LOGO, can you construct elegant procedures that will draw this family of 'floor coverings'?

# LOGO Challenge 10 - Circles

##### Stage: 3 and 4 Challenge Level:

It is not easy to create concentric circles and quite alot of work is needed in calculating the diameters of circles based on the length of the side of your many sided polygon.

A step size of 1 unit and a turn of 1 degree produces a circle of circumference 360 units.
A step size of 2 units and a turn of 1 degree produces a circle with a circumference of 720 units.

From these you can work out the diameter as

$C = \pi d$.

That should help you work out where you need to start the next circle.
Some LOGO programs, like MSWLogo understand "PI" and will do calculations which include it. For example: PI * 2 will give a decimal answer.