2 thoughts on “puzzle puzzle”

  1. It’s because the two triangles don’t have the same slope. The area of the missing square is transferred to the extra space occupied by the two triangles when they were switched around.

  2. he he he … yeap … i found the answer the second time i ponder over it. basically the red and green triangles are not similar triangles as it has a different height and width ratio = slope.

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