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sinmei5
GeoGebra
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近似值：有效數字
中華民國國旗 (Codex╱2026.10.06)
算柱 (兩位數)
找出對稱軸
AI 訓練教室
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認識分數
釘點紙畫三角形
相似三角形的判定3
周界(移邊)
五星红旗
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Secant Line or Secant
General Quadrilateral
Perimeter
Volume
Fractal Geometry