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fabunaci1060323

Author:陳正鴻

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拼砌四邊形
兩組對邊相等的四邊形
兩位數加法
四邊形的特性
異分母分數減法

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軌跡七︰移動點與一點一線保持相等距離(拋物線)
三角形面積公式B2
Volumen ablesen 1
Tangent from an external point
二倍角的余弦公式的证明

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Fractal Geometry
Quadratic Equations
Mathematics
Constructions
Dilation

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