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根據百分率找數量（一）: 例3的副本
Author:
冯圣军
,
GeoGebra Institute of Hong Kong
GeoGebra
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画直线等分三角形的面积
異分母分數減法
GeoGebra笔记功能体验课件
判斷球體
拼砌四邊形
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已知橢圓 x^2/a^2+y^2/b^2=1 (a>b>0)
整數÷整數_工作紙（一）_題2
謝爾賓斯基三角形
平行3
彩色斜線區域1060325
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Trigonometric Functions
Cube
Coordinates
Variance
Expected Value