TrigonAnimation is verson of Protractor where many functions are just disabled (verison of Trigon).

Trigon.swf is copy of Protractor.swf (in the TrigonAnimation folder). I renamed it not to confused it with a protractor. 

26 April 2008
=============

Ian comment: I am making updates to this file for Jenny P. I have the following instructions:

> Would it be possible to have an amended version of this animation
> for May with the third stage being slightly different
> Blue line goes round twice - second time with its length marked on
> Red line goes round twice -the second time with its length marked on
> Then red and blue together - once with their lengths marked on and
> once with the two lengths plus radius marked as 1
> Finally the red and blue and radius with the angle (just like the
> protractor)?
> 
> lengths could appear at the side of the animation in matching
> colours - though I think next to the line would emphasis the
> connection I am trying to make with the protractor in 5601.
> 
> I am writing the notes now - but the aim would be for teachers to
> show the animation (or at least the last section of it) and relate
> it to the ratios in the protractor - making connections explicit
> between the two things.  This will go in the notes which I have
> started to write if it helps.
> Later I will write a problem around changing triangles and using
> the ratios to find sides or angles.  Initial thinking is that you
> could also use the protractor like a calculator as well as being
> able to place it over the triangles.

In case I break something I'm going to backup everything now in a zipped folder called 'backup'.

Later on. After all this editing, the thing is a mess. I'm just going to edit Protractor.as and leave all other files as they are. 

Finished now. As above, I'll rename the swf file Trigon.swf.

28 April 2008
=============

I'm renaming this folder TrigonAnimation1. The original animation, on id 5615, is TrigonAnimation1, and that will remain as it was.