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P2 計算完結時間
Author:
Chan Pui Chuen
GeoGebra
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近似值：有效數字
美國國旗 (Codex 版)
長方體平面投影 (Codex版)
拼砌四邊形
畫出對稱圖形
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弦的定理
反餘弦函數
強森定理強森定理
B3_1-5_互動例6
圆在折线上滚动
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Isosceles Triangles
Integers
Plane Figures or Shapes
Fractions
Rational Numbers