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優良作品2(怡婷)
Author:
Ching-Hui Chou
GeoGebra
New Resources
美國國旗 (Codex 版)
幾何作圖題：切三圓（題目）
近似值：有效數字
直角坐標平面上的旋轉變換
長方體平面投影 (Codex版)
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Length of Horizontal or Vertical Line Segments 水平或鉛垂線段的長度
圓與直線
STATS Unit.2
六年級
圖二 的複本
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Sphere
Sequences and Series
Parabola
Trigonometric Functions
Straight Lines