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18-19年冬期SIAIIB[3-5]
Author:
永島 豪
GeoGebra
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等積変形2
正１７角形 作図 regular 17-gon
接点の作る円は内接円
sine-wave
コイン投げと樹形図
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reverse_02
角の二等分線
サイクロイド
整数問題1.1
感覚と数（見た目がいい比は？）
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