This design is made of three 2x1 rectangles. What fraction of it is shaded?pic.twitter.com/7G5Q61eolT
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I look forward to your solution!
I have a sneaking suspicion that it may all ultimately trace back to the relations 3 = 2^2 - 1^2 4 = 2*2*1 5 = 2^2 + 1^2 that link the side lengths of the triangles from which the whole figure is built. Interesting, too, that 7 = 2^2 + 2*1 + 1^2. Hmm.
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