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平行線と角度

Author:小林　誠

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standingwave-reflection
目で見る立方体の2等分
standingwave-plus
接点の作る円は内接円
正１７角形　作図　regular 17-gon

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高次式の因数分解
垂線が一点で交わることの証明
sinとcos2
三平方の定理　証明
素敵なグラフ

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Trigonometry
Real Numbers
Confidence Interval
Vectors 3D (Three-Dimensional)
Fractal Geometry

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