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Author:うしブログ

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円の伸開線
正１７角形　作図　regular 17-gon 2
standingwave-plus
sine-wave
standingwave-reflection

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ピタゴラスの定理（三平方の定理）の証明
円柱に内接する２つの球
Ptolemy's theorem
f1(x)=4x(1-x),fn+1(x)=fn(f(x))
usi-san's chillout program 01

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Root
Curve Sketching
Circumcircle or Circumscribed Circle
Congruence
Addition

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