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正五角形の作図
Author:
Naofumi Horio
GeoGebra
New Resources
フーリエ級数展開
アステロイド
sine-wave
対数螺旋
standingwave-reflection-fixed
Discover Resources
Ex_41
数学 Mathematics
直線上の点、垂線の足
（使用）中三平方根p43
テスト解説20191018
Discover Topics
Step Functions
Unit Circle
Vectors 2D (Two-Dimensional)
Plane Figures or Shapes
Variance