الثلاثاء، 10 سبتمبر 2013

Pencils down


Solve this geometry puzzle using logic only, without any calculating:
"What is the size relationship of the two yellow figures?  Is one bigger than the other (which?), or are they of identical size?"
It's not hard to guess the correct answer.  It's harder to explain why the answer must be true.

You can check your answer in the Futility Closet.

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