Well, Veeky Forums, what is it?

If the other shapes weren't numbered, then yes. Since they are, then you have to assume your expected to find a common pattern. 1 is the most likely answer, but since we can also apply the same pattern to 5, we include it.

can't argue with that

Or even assuming right angles.

Assumes the right side of the green and yellow triangle are of equal lengths.

Fold over 2 & 4. It's 6
If it's not. Fuck you.

-1/12

No it doesn't, you tard.

He made rectangles from each tighttriangle so he could find the total area of the square. Then he subtracted the given area.

I'm not even a regular here. My goodness. I hope you aren't either.

...

i've got 7.25

The bottom left rectangle will not have the area of the red triangle unless the right side of the green and yellow triangle are of equal lengths.