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### Number and algebra

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### Four Triangles Puzzle

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Age 7 to 11

Challenge Level

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We haven't had any correct solutions to this problem yet, but you can still send us your ideas - we'd love to hear from you.

Cut four triangles from a square as shown in the picture. How many different shapes can you make by fitting the four triangles back together?

The image in this problem is part of a piece of equipment found in the playground of a school. How would you describe it to someone over the phone?