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Perimeter

Author:Janice Wong, Anthony OR 柯志明

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兩組對邊相等和有直角的四邊形
sanjiaohanshu
四邊形的特性
小数的副本
畫出對稱圖形

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三角形重心
分數的圖示
三角形面積
時鐘
切线

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Exponent
Vectors 3D (Three-Dimensional)
Solids or 3D Shapes
Interest Calculation
Cone

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