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練習19解答
Author:
Shigeaki Ando
GeoGebra
New Resources
直線の軌跡
sine-wave
正１７角形 作図 regular 17-gon
アステロイド
standingwave-plus
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Christmas illumination
三角形の成立条件
看板と影
回転移動
ラグランジュの乗数法4
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Incircle or Inscribed Circle
Root
Planes
Logarithm
Integral Calculus