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Four Triangles Puzzle

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?

Two by One

An activity making various patterns with 2 x 1 rectangular tiles.

Playground Snapshot

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?

Overlapping Again

Age 7 to 11 Challenge Level:
Can you imagine gradually moving one shape across the other one?
If you're working away from the computer, it might help to draw the shapes, or cut some out from tissue paper or overhead transparencies.