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Triangle Island

Age 7 to 11 Challenge Level:

You have pitched your tent (the red triangle) on an island. Can you move it to the position shown by the purple triangle? You must obey the following rules:

You can only move one peg (corner) at a time.

Pegs (corners) must stay on the island.

The area of your tent (the triangle) must always stay the same but the sides may stretch.