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Proof : AB / BC = 1.61803398875

Proof : AB / BC = 1.61803398875

X = 3

X = CD = 5

Circle Area = 1434.81578552

Shaded Area = 4 Square Units

X = AB = BC = 8.94427191

X = BE = 20

X = FGH = 20

X = CD = 10