Abstract: I explain the geometric interest hidden in MathArt created from rotation and spiral. 目次 Title: Sun flowersTitle: Spiral Five FlowersTitle: PoinsettiaTitle: Pentagonal buds Title: Sun flowers Commentary: A seed spiral drawn using the function of the leaf phylloty. A spiral can be found on both the right-handed and left-handed, complex but beautiful. It can … Continue reading MathArt Gallery 5: Explanation of MathArt created from rotation and spiral