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外心

Author:田中利則

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接点の作る円は内接円
sine-wave
円の伸開線
standingwave
正１７角形　作図　regular 17-gon

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平面上の点の存在範囲
Hは何だろうか？
お魚天国と相似
safig2
駒東23456

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Exponent
Sphere
Mode
Quadratic Equations
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