23 December 2016

480. Triangle 3X3: Remove 3 to leave 9

Easy Medium Hard Extreme


Take away 3 matchsticks to leave 9 triangles. The 9 triangles do not have to be equal in size.

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There are 7 triangles of size 1X1 and 2 triangles of size 2X2.

There are also other solutions.

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