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２つの正三角形の問題
Author:
Tsuyoshi Yamamoto
GeoGebra
New Resources
接点の作る円は内接円
正１７角形 作図 regular 17-gon
小テスト
standingwave-reflection
standingwave
Discover Resources
Ex_116
円の面積
２次関数の標準形
GHS12131
分数あつまれ！異分母分数
Discover Topics
Set Theory
Constructions
Linear Functions
Special Points
Circle