11 May 2011

16. Add 5 to form 8 triangles

Easy Medium Hard Extreme

Add 5 matchsticks to form 8 triangles. All the matchsticks don't have to be flat on the surface.

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There are 6 small triangles and 2 bigger triangles

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  1. Another solution is that the horizontal line from the middle could be vertical and stil get 8 triangles.

  2. Adding 3 to make a star will create 10 triangles, 5 small and 5 more overlapping