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三角形の垂心
Author:
Hideaki Hosaka
三角形の垂心の作図です。
GeoGebra
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コイン投げと樹形図
sine-wave
standingwave-reflection
standingwave-reflection-fixed
standingwave-reflection-free
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ピタゴラス
Twin Cylinder
単位円と正弦曲線（cos）
極と極線は一対一に対応
城北高 2020推薦入試５
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General Quadrilateral
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