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三角形の角の二等分線と比２
Author:
kyouko
GeoGebra
New Resources
正１７角形 作図 regular 17-gon 2
小テスト
standingwave
等積変形2
正１７角形 作図 regular 17-gon
Discover Resources
Monty Hall Dilemma
同じ広さはどこ？(半円と正三角形)
GHS1327
二次関数と一次関数の共有点
円の性質2
Discover Topics
Statistical Characteristics
Numbers
Incircle or Inscribed Circle
Arithmetic Mean
Straight Lines