rotational symmetry

[hatsmum]

Maths question - how do you determine if a shape has rotational symmetry ? Any help appreciated

[poppit]

Do you remember those wooden puzzles your child did as a toddler which had various shapes with little pegs to hold them by and your child had to find out which hole the puzzle piece fitted in?

OK now picture the shape you are trying to work out the rotational symmetry for as one of those puzzle pieces. How many times could you rotate it and still fit it in the same hole? This tells you the order of rotational symmetry.

Hope this helps.

[hatsmum]

Thanks Poppit

[Guest55]

That's not quite right ... it's more 'How many times will it fit if I rotate it 360 degrees ie one turn?'

[poppit]

Thanks Guest55 that is what I was attempting to explain, but I didn't quite pick words.