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大12面体
Author:
Bunryu Kamimura
正20面体の中の正五角形から作成。星型多面体。
GeoGebra
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standingwave-reflection-fixed
等積変形2
standingwave
standingwave-reflection
standingwave-plus
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球の体積
二次の直交行列は群をなす
微分 図形的意味
円錐曲線の性質と活用
反比例のグラフ
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Perimeter
Angles
Area
Sphere
Fractions