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Key Stage 3 (Junior Secondary)
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3.2 Measures, Shape & Space 度量、圖形與空間
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Angles Related with Lines and Rectilinear Figures 與線及直線圖形有關的角
Angle Sum / Exterior Angles of Triangles
Exterior Angles of Polygons 多邊形的外角和
多邊形內角和
多邊形內角和
多邊形外角和
