Proofs Without Words

Quote of the Day

If you've been playing poker for half-an-hour and you don't know who the patsy is – your're the patsy.

— Warren Buffet

I love proofs without words. Usually, I see them in discussions of mathematical concepts like the Pythagorean theorem (examples). While reading about home construction at the Journal of Light Construction, I saw a nice graphical look at the difference between the gross margin on a product and the markup on a product.

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