Melody

product means multiply.

I keep losing my glasses    - I am still waiting on the alternative/accessory. I haven't decided yet.

When am I going to get it.  I've been waiting for ever!!!!!   

Don't worry - It's a private joke.  A public domain, yes that is true, but a private joke none the less.  

Yes, and I don't see why it is not used on more complicated ones as well!  

I lost my sunnies - never mind IO found them again!  

$${\mathtt{1}}{\mathtt{\,\small\textbf+\,}}{\mathtt{2}} = {\mathtt{3}}$$

It worked fine for me Andre - I did it on the home calc and on the forum - there is not a problem.

You could change those improper fractions to mixed numerals!  That would be better.

Points given for joining in - I want everyone to get involved! 

Not silly involvement - either proper maths or proper humour or both!

Legislate pi, really!

 Now that is funny!

Indiana "Pi" bill 
http://en.wikipedia.org/wiki/Indiana_Pi_Bill

y=tanx is in red,  y=sinx is in blue

$$tan(x)\ge sin(x)$$    when the red is equal or above the blue

solution:  

 $$\left[0\le x< \frac{\pi}{2}\right)\quad \bigcup \quad \left[\pi\le x< \frac{3\pi}{2}\right)$$

That is what I think anyway.

Okay,

So what Alan has demonstrated is that there is no specific answer because many different quadrilaterals can have these side lengths.

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Hi Alan,

I am impressed with your use of GeoGebra.   I have not found it very intuitive and have not progressed passed the real basics.

I believe you can also convert your diagram to Latex code and implant it that way!

I want an easy way to make and use a number line.  I did it last time with GeoGebra just by cutting out the y axis but it wasn't as good as I would have liked.  Do you know if this sort of thing can be done properly with GeoGebra?

Maybe Heureka knows if you do not ?