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椭圆的定义
Author:
guomenglin
Topic:
Ellipse
GeoGebra
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四邉形 (四年級) 教師版
兩位數除以一位數(一)
異分母分數減法
兩位數加法
找出對稱軸
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樞紐問題
圓周 (圖形C)
畢氏定理的圖形證明法
比較分數的大小(小六)
雙曲線1 焦點法
Discover Topics
Circle
Equations
Surface
Quadratic Functions
Integral Calculus