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正三角形の対称群
Author:
Bunryu Kamimura
GeoGebra
New Resources
正17角形 作図 regular 17-gon
等積変形2
sine-wave
standingwave-reflection
コイン投げと樹形図
Discover Resources
中澤さん
Miquelの定理(三角形)
誕生日は何曜日
長方形の折り返し(mobile版)
五角形動点
回転体-円環
Discover Topics
Rectangle
Arithmetic Operations
Geometric Distribution
Division
Cosine