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| a / b = 1.41421356237 |
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| Ratio = 0.214359353945 |
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| Angle AFE = 76° |
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| ECF = 45° ⇒ Blue Area = 6 ECF = 45° ⇒ Blue = 6 ( Elaborated ) |
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| Dodecagon. Find a, b, c, d |
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| Mauve / Total = 3 / 5 |
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| Red Area / Orange Area = 1 |
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| EF = √ 2 = 1.41421356237 |
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| Archimedes' Twin Circles |
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| Area ABC = 40.2265191075 |
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