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S7G1 模拟光的折射
Author:
学用数学
GeoGebra
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球體建築師
画直线等分三角形的面积
找出對稱軸
判斷球體
兩位數除以一位數（一）
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橢圓軌跡
圓周角觀察操作
橢圓3-平行四邊形法
两个经典不等式
極線對偶定理 / polar duality theorem 的複本
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General Quadrilateral
Vectors 3D (Three-Dimensional)
Hypothesis Testing
Exponent
Reflection