Here is a square: 
<div align="center">
<p><img  src="/content/03/08/penta4/square.gif" alt="square" width="159" height="159" /></p>

<p align="left">You will need a mirror for this activity.</p>

<p align="left">Where can you put the mirror across the square so
that you can still "see" the whole square?<br />

How many different positions are possible?<br />

How many lines of symmetry does a square have?</p>

<p align="left">Can you reflect part of the square so that you can
see a smaller square?<br />

A rectangle? A kite? A hexagon? An octagon?<br />

What do all the shapes have in common?</p>

<p align="left" class="acknowledgement">This problem is taken from
"Starting from Mirrors" by David Fielker, published by BEAM
Education. It can be purchased for £8.50 plus VAT (and
handling and delivery) by calling the BEAM orderline on 020 7684
3330.</p>

</div>