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台形

Author:福地裕

Topic:Trapezoid

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接点の作る円は内接円
対数螺旋
正１７角形　作図　regular 17-gon 2
円の伸開線
平均変化率

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生徒が発見した定理 Taziri's extension theorem
算法天生法指南一之巻
算法天生法指南二之巻(66)解答
鳩の巣原理_正三角形（分割なし）
逆チェバ三角形

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Power Functions
Percentages
Complex Numbers
Hypergeometric Distribution
Area

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