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入射角&反射角

Author:955288

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四邊形的特性
小数的副本
柱體建築師
判斷球體
兩位數加法

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內擺線
直线与椭圆
proof 49 黃彥淇
數學傳播39卷4期, 平面幾何公式思考
正方体展开图的副本

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Mathematics
Vectors
Addition
Surface
Prism

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