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Sticks and Triangles

Stage: 2 Challenge Level: Challenge Level:3 Challenge Level:3 Challenge Level:3

Have you got some headless matches or lolly sticks or straws that you could use to try out your ideas?
Whatever number of sticks you are trying, it might be a good idea to start by trying to make a triangle which has just one stick as a side.
Can you make any triangles with a side of two sticks? How about three sticks? Four? ...