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劉德晧proof14
Author:
郭亮偉
GeoGebra
New Resources
兩組對邊相等和有直角的四邊形
sanjiaohanshu
近似值：有效數字
畫出對稱圖形
小数 的副本
Discover Resources
十字立方體
任務2的副本
Copy of 畢氏樹
Illusion-平行线错觉
分数减法 Fraction Subtraction
Discover Topics
Median Line
Optimization Problems
Pyramid
Normal Distribution
Power Functions