Cutting triangles

This task is about working out what a sheet of paper will look like when it is folded and has shapes cut from it.

Question

diagram of folding and cutting paper  
 
a)  A sheet of paper is folded in half and the corner is cut off.
     What will the sheet look like when it is unfolded?  

    •   shape 1

    •   shape 2

    •   shape 3

    •   shape 4

Question

diagram of folding and cutting paper
 
b)  A sheet of paper is folded in half and two triangles are cut out as shown.
     What will the sheet look like when it is unfolded?

    •   shape option 1

    •   shape option 2

    •   shape option 3

    •   shape option 4

    •   shape option 5