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椭圆的定义
Author:
guomenglin
Topic:
Ellipse
GeoGebra
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【案例】2018年全国1卷理科12题
兩組對邊相等和有直角的四邊形
三位數除以一位數(二)
找出對稱軸
錐體建築師
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Task 2 Equilateral Triangle
雨刷練習
圓周公式應用題2
規律物件集的製作
Copy of 倒數計時
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Pyramid
Trapezoid
Natural Numbers
Step Functions
Equations