The pieces of this game are based on one of the classic riddles in the world of brain teasers. Begin by taking two of the pieces and trying to make a tetrahedron a pyramid whose base has three corners. The solution requires creative spatial thinking, and is used by many trainers in the field as a tool to increase awareness. FeaturesPyramideux Puzzle Box SpecificationsSize: 70 x 70 x 70 in.Weight: 0.28 lbs
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