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Author:
石川英樹
GeoGebra
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正１７角形 作図 regular 17-gon 2
アステロイド
等積変形2
standingwave-plus
円の伸開線
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放物線の媒介変数表示
外角の証明
問62
正四面体
折り紙テント３段階体積
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Tree Diagrams
Scatter Plot
Matrices
Linear Regression
Differential Equation