You may want to look at
before you try this problem.
Here are some pairs of shapes:
What overlap shape would you get if you overlapped them halfway
across each other?
Here are some more pairs of shapes. What overlap shapes would you
get this time?
Which of these overlap shapes did you find?
You may like to use this interactivity to experiment after you have
tried to imagine what will happen in your head.
Full screen version
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