Which face?

Which faces are opposite each other when this net is folded into a cube?
Exploring and noticing Working systematically Conjecturing and generalising Visualising and representing Reasoning, convincing and proving
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Problem



Image
Which face?
 The net on the right is folded into a cube.

It is placed on a table with the face 
Image
Which face?
 on top.

Which face is at the bottom?

This problem is taken from the World Mathematics Championships