Another Riddle (and dont ruin it if you already know the answer)

[Lior]

Hi,
take a look at this picture, and tell me how can it be:

http://rotter.net/triangle.gif

If the link doesn't work, you can download it from this thread.

Good Luck!

[kedaman]

It was a bit tricky but with a trick in psp i think i got it, well not to ruin for the others of you i'll put the answer in another (selfexplaining) picture:

[Lior]

There is a simpler explanation.
You dont have to mass around with psp, or with manual-measuring.

A clue: use math. ;)

[kedaman]

well using math, i could say that they are not triangles but quadrangles (oops now i ruined it) where the fourth angle is placed so that you won't notice it. The picture however shows that by switching the triangles the overall quadrangle (ignoring the hole) is enlargened.

[Guv]

This was not obvious to all? More programmers here than mathematicians.

[honeybee]

Not me, I am a dumbheaded accountant turned programmer.

.

[kedaman]

we all are, probably.

[Lior]

Very good keda !
When we use trigonometry we see the tan of the both triangles is not equal although both triangles got the same angle.

I'll post a new riddle soon... (Harder one!) :)

Cy'a.