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Addition of 2 Directed Numbers
Author:
Chan Man Fai
Addition of 2 directed numbers
GeoGebra
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多邊形的面積
探究三角形的全等條件
三角函数 的副本
圓的切線方程
盈利與虧蝕
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一元二次方程式
同心圓和線段
ghseh 二次函數描點法上下平移-6
橢圓3--平行四邊形法
折纸角度探究2
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Sine
Scalene Triangles
Matrices
Poisson Distribution
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