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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
６章⑥三角柱の展開図
standingwave
接点の作る円は内接円
standingwave-plus

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数Ⅲ 半直線のなす角1
この円を九点円とする三角形を作図せよ
体3_93_rd1
直線上で回転させてできる体積①
作図(練習32) のコピー

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Plane Figures or Shapes
Integers
Cone
Ellipse
Hypergeometric Distribution

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