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余弦定理Cosine theorem
Author:
Bunryu Kamimura
余弦定理(ピタゴラスの定理の拡張)KN=2EG=2AEcosE
GeoGebra
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standingwave-reflection-free
正17角形 作図 regular 17-gon
standingwave-plus
等積変形2
目で見る立方体の2等分
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sinh cosh tanh functions
フールマン円
一次関数動点問題例
四角形ABCDの各辺の中点を結ぶとどうなる?
等積変形(四角形を三角形へ)
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Root
Division
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