How to Draw-Phi & the Fibonacci Spiral from the Vesica Piscis
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Math topics:
Quadratic irrational numbersFibonacci numberSquare root of 5Golden ratioAlgebraRatioSquare (algebra)NumberIntegers0 (number)8 (number)1 (number)9 (number)5 (number)Mathematical symbolsTheoremPlus and minus signsEquals signElementary shapesRectangleTriangleRadiusElementary geometryPiEdge (geometry)Euclidean geometryCurvesSpiralCircleCurveUlam spiral