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ie 9

Author:LAM YU SANG

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異分母分數減法
算柱 (兩位數)
兩組對邊相等的四邊形
判斷球體
四邊形的特性

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凸透鏡成像
線之極點定理 / pole of a line theorem
S2 Angles Related to Rectilinear Figures
螺旋正方形
圆面积展开图--教学材料

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Tree Diagrams
Diagrams
Secant Line or Secant
Real Numbers
Plane Figures or Shapes

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