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長方形になるのは？
Author:
小山英憲
GeoGebra
New Resources
コイン投げと樹形図
正１７角形 作図 regular 17-gon
standingwave-reflection-free
直線の軌跡
サイクロイド
Discover Resources
放物線(数Ⅲ)
１８０°の二等分線(垂線)
回転移動2 のコピー
Enjoy GeoGebra at home.
Similar transformation(相似形の変身)
Discover Topics
Logic
Plane Figures or Shapes
Multiplication
Triangles
Vectors 2D (Two-Dimensional)