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正二十面体
Author:
Norio Yamakoshi
1辺の長さが2の正二十面体です。
GeoGebra
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６章⑥三角柱の展開図
standingwave
sine-wave
standingwave-reflection-fixed
アステロイド
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三角関数と指数関数
直角三角形の作図
testq
平行線
sinとcosの定義
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Logarithmic Functions
Circumcircle or Circumscribed Circle
Coordinates
Cylinder
Solids or 3D Shapes