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椭圆画法2定义法
Author:
冯伟冀
GeoGebra
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sanjiaohanshu
近似值：有效數字
畫出對稱圖形
找出對稱軸
第八周作业
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比較小數的大小
國旗
螢橋國中 鄭毅華
外心
畫三角形 題1a 的複本
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Cone
Functions
Optimization Problems
Difference and Slope
Addition