Move those halves

For this task, you'll need an A4 sheet and two A5 transparent sheets. Decide on a way of arranging the A5 sheets on top of the A4 sheet and explore ...

Problem

 
Here's a green A4 sheet and its two halves which are see-through orange and blue sheets.



 

Image
Image described above.


Explore where you can put these two halves and look at the overlap and the uncovered green parts.

There are no particular rules, it's just a matter of having an A4 sheet and the two transparent A5 sheets.

What different shapes and areas can you discover?