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## 'LOGO Challenge 10 - Circles' printed from http://nrich.maths.org/

These challenges arose from conversations and ideas during a Royal
Institution Saturday morning Maths Workshop. Consider the
procedure:

TO POLY :X :Y

REPEAT :Y [FD :X LT 360/:Y]

END

where :X and :Y are variables, that can be changed as you
experiment and try to understand what is happening.

Think about, try to imagine, then experiment with:

POLY 50 7

POLY 20 16

POLY 20 30

etc..

What happens as the value for :Y increases yet further? (i.e.
considering the limitations with your monitor's powers of
resolution.)

.

.

.

BUT

.

What is the most elegant way of coding the drawing of a circle of
radius 60 screen units in the centre of your screen?

[Hint: use the primitive HOME to return turtle.]

Naturally, geometric designs have long been embellished with
circles.

You might like to consider re-creating the following designs this
month.