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二つの正三角形
Author:
Naofumi Horio
GeoGebra
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正１７角形 作図 regular 17-gon
正１７角形 作図 regular 17-gon 2
斜めドップラー
standingwave-reflection
円の伸開線
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Ex_64
等式の証明
オーベルの定理 Van Aubel's theorem
ｙ’＝１／ｘ
円錐の切断 双曲線の焦点
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Median Value
Limits
Differential Calculus
Trigonometry
Percentages