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cheba
Author:
早苗雅史
GeoGebra
New Resources
sine-wave
コイン投げと樹形図
対数螺旋
等積変形2
正１７角形 作図 regular 17-gon 2
Discover Resources
test.html
石とりゲーム（理論版）a Japanese children's game
アポロニウスの円
動画
図形の動的な操作教材１
Discover Topics
Geometric Distribution
Cuboid
Symmetry
Functions
Pythagoras or Pythagorean Theorem