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Yamaguchi's Surface of constant width
Author:
Naofumi Horio
GeoGebra
New Resources
コイン投げと樹形図
standingwave-reflection
standingwave-reflection-free
正１７角形 作図 regular 17-gon
standingwave-reflection-fixed
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平行な直線
（sinθ）’＝cosθ
ヘロンの公式
数Ⅲ 半直線のなす角1
等積変形
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Normal Distribution
Parametric Curves
Terms
Addition
Logarithm