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Author:
Tetsuya Akazawa
GeoGebra
New Resources
standingwave-reflection-free
直線の軌跡
standingwave-reflection-fixed
対数螺旋
アステロイド
Discover Resources
Pappus's hexagon theorem
四円傍斜術
三角形の直角双曲線を作る
音楽と数学
square root(平方根) ver.up
Discover Topics
Coordinates
Rotation
Constructions
Incircle or Inscribed Circle
Vectors