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外積_三個分量
Author:
陳柄何
Topic:
Vectors 3D (Three-Dimensional)
GeoGebra
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勒洛四面体（参数曲面法）
滚动系列
幂函数
伞骨架模型
正方形折纸减去两角
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判斷柱體11
If x^2 + x + k > 0 for any real value of x, what is k?
橢圓包絡線1060406
立體網狀圖
两角和的余弦公式几何证明
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Calculus
Reflection
Limits
Square
Linear Equations