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同心圓

Author:柳淳珈

New Resources

直角坐標平面上的旋轉變換
小数的副本
近似值：有效數字
四邊形的特性
找出對稱軸

Discover Resources

找出活動所用的時間
HKDSE 3D Figures
兩條數線比較
Angle between a Line and a Plane
多边形对角线

Discover Topics

Difference and Slope
Pyramid
Subtraction
Geometric Mean
Derivative

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