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外心

Author:田中利則

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standingwave-reflection
等積変形2
sine-wave
正１７角形　作図　regular 17-gon 2
フーリエ級数展開

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マイナス２進法 The minus binary system
４重追跡線
ｶﾗｲﾄﾞｻｲｸﾙの展開図と3Dｼﾐｭﾚｰｼｮﾝ
フレンチ　ドーナツ
クリア_Clear49

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Arithmetic
Rectangle
Right Triangles
Numbers
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