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２つの正三角形
Author:
Tsuyoshi Yamamoto
GeoGebra
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正１７角形 作図 regular 17-gon
正１７角形 作図 regular 17-gon 2
standingwave
目で見る立方体の2等分
サイクロイド
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複素数の和
P75 練習１６
問題2－10 図6
動点問題
回転体 円
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Plane Figures or Shapes
Logic
Difference and Slope
Dilation
Tangent Function