パスカルの蝸牛形
1. LimaçonIn geometry, a limaçon or limacon, also known as a limaçon of Pascal, is defined as a roulette formed when a circle rolls around the outside of a circle of equal radius. It can also be defined as the roulette formed when a circle rolls around a circle with half its radius so that the smaller circle is inside the larger circle. Thus, they belong to the family of curves called centered trochoids; more specifically, they are epitrochoids.
Read “Limaçon” on English Wikipedia
Read “パスカルの蝸牛形” on Japanese Wikipedia
Read “Limaçon” on DBpedia
Read “Limaçon” on English Wikipedia
Read “パスカルの蝸牛形” on Japanese Wikipedia
Read “Limaçon” on DBpedia
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