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外心

Author:田中利則

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正１７角形　作図　regular 17-gon 2
standingwave
standingwave-reflection-fixed
等積変形2
直線の軌跡

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graph for math
６円の中心が外接六角形ならば六点は同一円周上にある。
比例のグラフ
三角形の辺と角
GHS1225

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Interest Calculation
Multiplication
Equations
Tree Diagrams
Geometry

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