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GeoGebra
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後者
Author:
うしブログ
GeoGebra
New Resources
sine-wave
standingwave-plus
円の伸開線
standingwave-reflection-fixed
standingwave
Discover Resources
三角形の中心と極と極線
拡張三角形
球と円錐の体積
動点問題（1次関数）
長方形になるのは？
Discover Topics
Rectangle
Similarity Transformation or Similarity
Secant Line or Secant
Vectors 3D (Three-Dimensional)
Vectors