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e 後 ZS(222)
Author:
永島 豪
GeoGebra
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正１７角形 作図 regular 17-gon
standingwave-reflection
standingwave-reflection-free
standingwave-reflection-fixed
接点の作る円は内接円
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四円傍斜術内接
ユークリッドの幾何学
アポロニウス
円の面積と円周の増え方
掛谷の問題
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Geometric Mean
Differential Equation
Sequences and Series
Vectors
Numbers