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tanθの三角不等式
Author:
Yusuke Kato
GeoGebra
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standingwave-reflection-free
standingwave
standingwave-reflection-fixed
小テスト
sine-wave
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geogebratest
楕円正七角形（平行七角形）
三角形の傍心
放物線の極線の対称性について
平行四辺形の面積と行列式
Discover Topics
Special Points
Binomial Distribution
Quadrilaterals
Linear Functions
Right Triangles