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Posted by on Feb 24, 2010 in Opinion, TG Roundup

Enjoy Teasing Your Brains !

How can this be true?
Give me an answer for this riddle?… ??… wrack your brains let’s see if anyone gets the answer to this one!

Recently a professor in MIT has put a new theory on right-angled triangles that has challenged some accepted norms in Geometry. This theory, Prof. John Mentriffe says, will revolutionize the area in mathematics that deals with calculation of motion of objects in space and design of the Universe.


  1. Another hint seems to be that this Prof. John Metrife seems to be appearing only in the context of this puzzle 😀 … and seems like the diagonal has a “bulge” in the second case and that is where there seems to be the area of the “missing” block going. thanks for posting !

  2. Though it looks like, the whole figure as is not a triangle, because the diagonal is not a straight line. It is an illusion that you are looking at a triangle. If you calculate the area each colored part occupies, it’s same in both cases, so the gap in the second one came due to the better arrangement of the parts.

  3. after reading some posts on internet, brainstrom with friends, here is the solution

    The intersection of red, green triangles are less than 180 degrees. And when they are re-arranged it’s more that 180. So the diff is the remaining. Clever description to mislead.

  4. I have been trying to figure this out for the past 10 min. Dang! 🙂 I also put another smart brain (another professor) to figure this out!!